Tuesday, 20 October 2026

Oldest Known Spear Attack May Be Found in 75,000-Year-Old Neanderthal Remains

16 Oct. 2026, By P. Dockrill

The left scapula of Shanidar A.
 (University of Cambridge)

When the end came, it must have been very painful.

In a moment of violence roughly 75,000 years ago, something sharp pierced the body of the victim, known only as Shanidar A, an adult Neanderthal estimated to be 45 years old.

The deadly injury left a gaping 15-millimeter-wide hole in Shanidar A's left shoulder blade.

We can't say for sure what made that hole, but in a new study in Scientific Reports, researchers suggest it was probably a spear, meaning this could be the earliest known example of an interpersonal spear attack in the hominin fossil record.

"The position of the wound and the force required to push it right through the Neanderthal's body bear the hallmarks of an intended kill shot directed towards the heart," says paleoanthropologist Emma Pomeroy from Cambridge University.

In their study, researchers analyzed the remains of Shanidar A, which were excavated in 2019 and 2022 from Shanidar Cave in Iraqi Kurdistan, one of the world's most important archaeological sites for understanding Neanderthal behavior, dating back to fossil discoveries that began in the 1950s.


The front (left) and back (right) views of the Shanidar A scapula.
 (Dr Emma Pomeroy)



The newly identified Shanidar A, whose sex remains unknown, is one of 13 Neanderthal individuals whose remains have been found in the cave, some with signs of deliberate burial, which has helped to reshape our understanding of Neanderthals, revealing evidence of specific cultural and funerary behaviors.

The most famous example of this – the symbolic "flower burial" theory, proposed in the 1970s after pollen was found in a grave – has since been challenged by some in the archaeological community, who argue animal activity may better explain the pollen.

But many agree that the repeated burials in the same spots in Shanidar Cave mean something very important about how Neanderthals laid their fallen to rest.

"The repeated use of a single circumscribed space to deposit the dead within a relatively short time-span (likely within generations…) is difficult to explain except in terms of intentional patterned behavior," the researchers write in their paper.

"The highly restricted area within which the cluster was deposited points to specific meaning being attached to this location, rather than pure practicality or sentiment."


View of the entrance to Shanidar Cave in Iraqi Kurdistan. 
(Prof Graeme Barker)



The discovery of Shanidar A adds to the argument, but as it happens, their violent end wasn't the only remarkable thing about this ancient Neanderthal's life.

Not much of Shanidar A was recovered: only the shoulder blade, a mostly complete right hand, two left ribs plus a right-rib fragment, and some teeth.

One of those teeth showed signs of being split in half while Shanidar A was still alive, suggesting Shanidar A suffered some kind of major facial injury that broke their tooth apart, and then lived on with only a fragment of it in their mouth afterward.

"Surviving a blow that splits a tooth in this fashion, then continuing to live and eat for a period of at least a year and maybe more, would have required care and support from other Neanderthals," says Pomeroy.

"There's no doubt that Shanidar A would have had difficulty communicating and been in absolute agony for a long period of time… this was clearly an individual who was cared for during their lifetime."

While we don't know what caused the mouth injury, the researchers suggest it was most likely blunt force trauma, either from something like a fall onto a hard surface, or possibly another incident of interpersonal violence, like the hypothesized spear attack ultimately thought to have claimed Shanidar A's life.


Various views of the mandibular left lateral incisor that had been split longitudinally. 
(Dr Emma Pomeroy)



With regard to the fatal shoulder injury, aside from the 15-millimeter hole in the scapula, the team also found tiny fractures in the bone and displaced bone fragments around the perforation, which all point to a puncture wound, most likely caused by a rounded wooden spear, the researchers think.

"Whether the traumatic lesion on the scapula resulted from something like a hunting accident or from interpersonal violence cannot be known," the researchers explain.

"Either way, the spear would have entered the individual's body on the left-hand side whilst they were facing forward. Such an injury would have penetrated all the way through the chest, including the lungs and potentially major blood vessels, likely leading to a rapid death."

While there's no surviving sign of the spear or weapon in Shanidar Cave – which isn't unusual, given how easily wood can decompose over long time periods – evidence for wooden spears dates back some 400,000 years, so it's entirely plausible that one could have caused the fatal injury.

Whatever happened, it sounds like Shanidar A's people did what they could.

"Shanidar A's shoulder injury appears to have been fatal," the researchers write, "but the apparent placement of the body in a location that subsequently became part of a tight cluster of Neanderthal individuals, who were likely intentionally deposited within living memory of each other, strongly suggests a level of care during and immediately after death."


The birth of modern Man
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Old Blood Cells Have Been Transformed Into Brain Stem Cells That Get Younger As They Age

20 Oct. 2026, By I. FARKAS

(Eugene Mymrin/Moment RF/Getty Images)

Aging is the price paid for the ability of experiencing existence, one might philosophize.

Natural cellular aging begins with differentiation. Once a stem cell becomes a specific cell type, it's locked in forever: fat cells can never become muscle cells, no matter how hard one wishes, or pokes and prods at them in front of the mirror.

Or so it goes in nature, but scientists can definitely transform cells, as if biologically compensating for all the failed alchemical attempts of the past.

Now, scientists have transformed old blood cells into young brain stem cells, which continued to grow younger as they grew older.

The researchers, from the University Hospital of Bonn and the University of Bonn, in Germany, described their methods in the journal Aging Cell.

Cellular transformations can be done in two main ways. The first, more circuitous route turns a specific cell back into a pluripotent stem cell, or an embryonic "blank slate," and then into a different cell type.

The second method involves a "direct conversion," which skips the middle stage and directly transforms a cell into a different type.

"Using this method, we have directly converted red blood cell precursors into neural stem cells," summarizes Oliver Brüstle, the director of the Institute of Reconstructive Neurobiology at the University Hospital of Bonn.


Neurons generated through the differentiation of neural stem cells, initially derived from blood. 
(Brüstle Research Group / University of Bonn)



The researchers used donor cells from 15 people across the age spectrum, from newborn to 101 years of age.

They specifically took erythroid progenitor cells (EPCs), which are akin to red blood cells that haven't graduated college yet, and turned them into induced neural stem cells (iNSCs), which are the pre-graduate cells of the brain.

They achieved the direct conversion genetic shortcut via an unlikely agent that usually destroys cells.

The researchers used a virus to deliver two transcription factors, or proteins that attach to DNA to regulate gene activity, to get the cells to change their types.

Then they used two genome-bloodhounding methods – DNA methylation measures and RNA sequencing – to track the resultant anti-aging effects and genetic behavior.

By the 12th day after the viral "infection," the cells started showing their new identity, ditching their blood-like proteins and replacing them with the expression of neural-like proteins instead.

Initially, the epigenetic age (the DNA changes accumulated over time) of the EPCs was highly correlated with the chronological age of their donors.

Obviously, blank slate cells revert to an embryonic state and become rejuvenated, regardless of the age of the person who donated the blood sample.

So the researchers wanted to see if the direct conversion method they used also rejuvenated the converted cells.

Intriguingly, they did, though it took more than twice as long.

But this was just the appetizer, because the neuronal stem cells kept getting younger as they got older (excuse the paradox).

Over the following 50 to 100 days, they kept de-aging, eventually reaching about 5 percent of the donor age, with the majority of epigenetic age-related traits resetting by around 50 days of the conversion process.

In other words, counter-intuitively, they got younger as they got older.

In effect, the converted cells became 60 years younger in 50 days, the researchers note in their official statement, proving that you really can 'melt away the years' as hotel-spa brochures and late-night infomercials promise (if you're a cell, anyway).


The induced neural stem cells, which can differentiate in a few types of brain cells such as neurons, which were derived from the blood of a 101-year-old donor.
 (Brüstle Research Group / University of Bonn)



But were these cells actually younger, or did they just look that way? In other words, anyone can slip on a Thrasher hoodie, but it doesn't imbue them with skate-worthy balance.

"We also know that this epigenetic rejuvenation ensures that the cells actually behave like young cells," Brüstle says.

The researchers analyzed this through numerous measures, including protein expression as well as the rejuvenated cells' recycling abilities.

The cells also displayed less DNA damage and mitochondrial toxicity, showing that the direct conversion cells enjoyed benefits comparable to the blank slate cells.

Intriguingly, they continued growing biologically younger even in conditions that inhibited their proliferation, or ability to divide and multiply, suggesting their rejuvenation isn't dependent on their ability to split.

The researchers do mention some study limitations. These include potential mathematical biases in de-aging models, the absence of naturally aged neural stem cells to use as comparisons, and potential in vitro versus in vivo behavioral differences in cells.

But, promisingly, engineered cells appear to be viable. In previous Franken-mouse-like research from Bonn scientists, cells formed connections with existing neural cells after being transplanted into the brains of mice.

Such GMO mice à la Pinky and the Brain demonstrate future therapeutic value, suggesting the possibility of engineering brain cells for individuals affected by neurodegeneration.

Finally, the protracted nature of the converted cells in this work allows easier study:

"Rejuvenation that extends over such a long period of time is ideal as an experimental model," Brüstle emphasizes.

"Since the epigenetic clocks are slowly reset over several weeks, we can use this model to investigate which factors and active substances accelerate or slow down the rejuvenation process."


The Life of Earth
https://chuckincardinal.blogspot.com/

The Amazon Is Burning Again, and NASA Warns the Worst Is Yet To Come

BY A. VOILAND, NASA EARTH OBSERVATORY, OCT. 20, 2026

NASA Earth Observatory images by Lauren Dauphin, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview.

A dangerous chain reaction of wildfires is unfolding across the tropics, and the Amazon rainforest is now caught in its path.

A dangerous El Niño-driven wildfire cascade has reached the Amazon, and NASA scientists warn that the worst may still be ahead as hidden fires spread beneath the rainforest canopy.

El Niño is fueling a chain reaction of wildfires across the tropics, with fires first emerging in equatorial Asia before spreading to the central and eastern Amazon rainforest.

While tornadoes and thunderstorms can cause widespread damage in a matter of minutes, El Niño influences weather conditions over the course of months. In 2026, the climate pattern has intensified drought across the Amazon, leaving vast areas of rainforest increasingly vulnerable to fire. Scientists warn that the region is only beginning what could become an unusually long and destructive fire season.

Satellite observations have revealed a dramatic increase in fires and smoke emissions across the central and eastern Amazon since September 2026. The surge is apparent in several monitoring systems, including NASA’s Fire Information for Resource Management System (FIRMS), the Global Fire Emissions Database (GFED), and NASA Worldview. The affected area extends from the forests surrounding Manaus and Santarém, two important commercial and transportation hubs, eastward toward the mouth of the Amazon River.

Thick Wildfire Smoke Blankets the Amazon

On October 12, 2026, NASA’s Aqua satellite captured an image showing enormous plumes of smoke rising from fires on both sides of the Amazon River. The image was recorded by MODIS (Moderate Resolution Imaging Spectroradiometer), one of the satellite’s Earth-observing instruments.

That same day, Manaus, the capital of Brazil’s Amazonas state, was engulfed in dense smoke. City officials reported dangerously polluted air, with concentrations of fine particulate matter (PM2.5) exceeding 135 micrograms per cubic meter. That level placed air quality in the second-worst category of a regional air quality index.

The smoke brought significant disruptions to the city of more than 2 million residents. Schools shut down, public events were called off, and children’s sports leagues suspended activities as authorities issued warnings about unhealthy air conditions, according to news reports.

Scientists Warn of an El Niño Wildfire Cascade

According to Douglas Morton, an Earth system scientist at NASA’s Goddard Space Flight Center, the fires around Manaus and Santarém are part of a much larger pattern. He describes it as a “cascade” of tropical wildfires driven by changes in rainfall associated with El Niño.

The sequence typically begins near the equator, where dry conditions contribute to peat fires in Indonesia. Increased burning then develops in the central and eastern Amazon. Morton and researchers from the University of California, Irvine; Vrije Universiteit Amsterdam; and the University of Maryland documented this connection in a 2017 study examining the devastating wildfire season associated with the 2015–2016 El Niño. A similar sequence occurred in 2023.

The wildfire activity unfolding in 2026 appears to be following that same progression. Since August, parts of Indonesia have experienced persistent drought, widespread fires, and heavy smoke. In October, wildfires destroyed hundreds of homes, while thick smoke covered entire islands on most days.

“Now, in the Amazon, we’re seeing the second domino in the cascade fall,” Morton said, referring to the growing number of fires in the Brazilian states of Pará and Amazonas.

More Amazon Wildfires Could Be Coming

Scientists expect the next phase of the wildfire cascade to develop farther north during November and December. Areas at risk include the Brazilian states of Roraima and Amapá, northern Pará, and parts of Venezuela, Guyana, and Suriname.

The danger could then shift southward. Morton predicts that drought and wildfire risk will reach their highest levels in the southern Amazon regions of Brazil and Paraguay around August and September 2027.

“It’s so striking—and frustrating—that this is happening all over again,” said Morton.

One particularly troubling aspect is that many of the forests now burning were also damaged during the El Niño events of 2015 and 2023. Fire can be especially destructive in tropical rainforests because most native plants and animals have not evolved to withstand frequent burning.

Previous wildfires have also weakened parts of the forest, leaving behind damaged and partially charred trees. Morton explained that these changes make the remaining vegetation more vulnerable, potentially allowing some fires to burn with greater intensity than before.

For communities around Manaus and Santarém, relief may not arrive until seasonal rains return in December 2026 or January 2027. However, Morton emphasized that regions farther north and south still have an opportunity to reduce their risk.

“Given the intensity of this El Niño, this really is the year for people to avoid burning at all costs,” Morton said.

Extreme Drought Turns Human-Started Fires Dangerous

Despite the enormous number of wildfires affecting the Amazon, lightning is responsible for very few of them. The Brazilian Amazon is normally so wet that lightning starts less than 1 percent of fires. According to Morton, human activity is responsible for the overwhelming majority of the fires currently burning there.

What makes 2026 especially dangerous is the severity of the drought, which has been intensified by El Niño. Brazil’s National Institute of Meteorology reported that rainfall in Manaus was 95 percent below normal in August and 60 percent below normal in September.

Many of the major fires began as controlled burns used to manage agricultural land, such as clearing unwanted vegetation from pastures or removing crop remnants from fields. But with the forest floor unusually dry, some of those fires escaped their intended boundaries and spread into the rainforest’s understory.

Shane Coffield, an assistant research scientist at the University of Maryland who works at NASA Goddard, said satellite analysis suggests that between 50 and 70 uncontrolled fires are currently burning in the Santarém area alone.

NASA Discovers Hidden Amazon Fires That Satellites Miss

The true extent of the burning may be even greater than official fire monitoring systems suggest.

Through a NASA Earth Action project, Coffield is examining observations from VIIRS (Visible Infrared Imaging Radiometer Suite) to find fires that fall below the detection thresholds used for official FIRMS fire data.

These additional detections, referred to as “candidate fires,” could help researchers build a more complete picture of wildfire activity. Coffield intends to provide their locations to scientists at MapBiomas, a collaborative network of universities, nongovernmental organizations, and technology companies that tracks fires and changes in land use throughout the Amazon.

“For the area around Santarém, we’ve identified about 40 percent more fires than you’ll see in active fire counts from FIRMS,” said Coffield.

Detecting every fire from space is difficult, particularly in dense tropical forests. Heavy smoke, cloud cover, and thick tree canopies can interfere with satellite sensors by obscuring the infrared heat signals emitted by flames. Smaller, less intense fires moving through vegetation beneath the forest canopy are especially easy to overlook.

This means that some of the days with the thickest smoke can produce surprisingly few satellite fire detections, even when extensive burning is taking place.

“On some of the smokiest days, we have very few detections from MODIS and VIIRS, and we know that isn’t right.”


The Life of Earth
https://chuckincardinal.blogspot.com/

Monday, 19 October 2026

The World May Be Much Closer to a Major Conservation Goal Than Scientists Thought

By U. of Kent, Oct. 18, 2026

A new study suggests that global land conservation may be much closer to an important international target than official figures indicate. 
Credit: Shutterstock

The world may be closer to its 30% land conservation goal, but gaps in grassland and shrubland protection show why acreage alone cannot safeguard wildlife.

Some areas that support wildlife appear in national conservation records but are missing from the global tally. Including them could bring the share of land in some form of conservation to 26.8%, or nearly 27%, well above the officially reported 18.5%.

That difference changes the picture for an international commitment to protect nature. Almost every country has agreed to conserve 30% of land and sea by 2030 to help halt and reverse the biodiversity crisis, yet official figures suggest that progress on land has stalled.

“With four years to go, the terrestrial component of the 30% target seems out of reach. Our analysis suggests that much more of the land is in some type of conservation area than currently recognized,” says lead author Helen O’Neill, a postdoctoral research associate at the Institute of Zoology in London.

Conservation areas beyond the official count

To build the broader estimate, an international team of conservation experts combined global measures of protection with national data on conservation areas. The study, published in Nature, was led by the Durrell Institute of Conservation and Ecology at the University of Kent in the United Kingdom.

“We need much more effort to officially recognize the existing conservation areas that are currently only recorded in national datasets.” That is the call from the study’s lead investigator, Bob Smith, director of the Durrell Institute of Conservation and Ecology at the University of Kent in Canterbury. The university is part of the London and Southeast University Group.

Grasslands and shrublands need more protection

Grasslands and shrublands, home to uniquely adapted wildlife, still have limited protection even within this larger conservation network. These gaps mean that expanding the total area alone cannot ensure that the full range of habitats receives protection.

Co-author Heather Bingham, who leads the Protected Planet Initiative at the United Nations Environment Programme World Conservation Monitoring Centre in Cambridge, stresses that “conserving 30% of lands and seas is not sufficient on its own. The target also calls for these areas to be managed effectively for positive biodiversity outcomes, and to be placed where they will have the greatest impact for biodiversity.”

Meeting those requirements means connecting conservation areas, including diverse ecosystems, and managing sites fairly for local people. Smith adds, “We also need to focus much more on improving the effectiveness of all conservation areas, as increasing the area of land under conservation will do little unless these sites are effectively and fairly managed.”


The Life of Earth
https://chuckincardinal.blogspot.com/

Something Unexpected Is Happening to Antarctica’s Collapsing Ice Cliffs

By M. I. T., Oct. 18, 2026

Antarctica’s towering ice cliffs may be more resilient than scientists once feared. New satellite observations reveal surprising natural mechanisms that could reshape predictions of future sea level rise.
 Credit: Shutterstock

Satellite observations show Antarctic ice cliffs stabilizing after unexpectedly rapid collapse, challenging assumptions about runaway ice loss and its contribution to rising seas.

Antarctica’s ice shelves help hold back the ice sheet behind them, but rising temperatures are causing these supports to melt and break apart at record rates. As sheer ice cliffs are left exposed, scientists have worried that a collapse could reveal a taller cliff farther inland, setting off a chain of failures that eats into the ice sheet and raises seas worldwide.

In a four-year satellite survey of more than 15,000 Antarctic ice cliffs, researchers at MIT and the Woods Hole Oceanographic Institution (WHOI) found that the tallest cliffs they examined closely did collapse, and the ice sheet in those regions retreated faster than models predicted. “But that retreat was short-lived,” says Caroline Needell, a graduate student in the MIT-WHOI Joint Program.

Needell conducted the study, published in Science, with Catherine Walker, an assistant scientist at WHOI, and Jeremy Bassis, an associate professor at the University of Michigan.
Rapid collapse without runaway retreat

The observations came from NASA’s Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2), which passes over Earth’s polar regions. Its laser altimeter measures the height of ice sheets, glaciers, and sea ice, as well as ocean levels in and around Antarctica. The team analyzed measurements collected every three months from 2019 to 2023 to determine how tall the cliffs were and how they changed over time.

Those measurements offered a much broader test of a proposed process called marine ice cliff instability, or MICI. In this scenario, a cliff exceeding a critical height collapses under its own weight. If that exposes a taller cliff, the failures continue inland. Previous studies had investigated this process by modeling ice’s physical properties, scaling those relationships up to entire cliffs, and combining the predictions with a few observations from Antarctica.


Researchers at MIT and the Woods Hole Oceanographic Institution (WHOI) analyzed over 15,000 ice cliffs in Antarctica to reveal how they behave over time. 
Credit: Caroline Needell



“Predictive ice-sheet models that have been used so far to represent ice cliff instability just take into account cliff height,” Needell notes. “That’s the only variable that matters. And once the cliff height reaches the critical threshold, usually 100 meters, it should initiate this runaway effect of ice sheet retreat.”

Across the satellite survey, the average ice cliff stood about 30 meters (98 feet) tall, well below that proposed threshold. A few rare cliffs exceeded 100 meters (328 feet), roughly the height of the Statue of Liberty, giving the researchers an opportunity to examine what happened near and above the predicted danger point.

“After we did that global analysis, we thought, ok, let’s zoom in on the tallest cliffs and see how they’re behaving,” Needell says.

The team focused on four cliffs in four regions around the Antarctic ice sheet. These cliffs were roughly 100 meters tall, with the tallest reaching 127 meters (417 feet). Tracking them through the same four years of measurements revealed that their rapid collapse and retreat did not continue unchecked. The ice eventually spread back out toward the ocean.

“It’s this rapid retreat, punctuated by periods of stabilization,” Needell says. “That was puzzling to us. Then, we thought: We need to look at all the things that affect cliff height.”

Rising ground can stabilize ice cliffs

The researchers first examined the shape of the land beneath the ice. Over relatively flat ground, changes in the ice surface’s elevation reflect changes in the thickness of the ice itself. Where the ground rises, however, some of that elevation comes from the land underneath, leaving a thinner layer of ice above it. Such a rise could act as a speed bump for retreat by making the overlying ice less prone to collapse. When the team checked Antarctic topographic measurements, they found that cliffs stabilized around places where the underlying land rose.

Taller cliffs also “thin out” faster, the researchers found. As they collapse, they settle into shorter, more stable cliffs, limiting further collapse.

“Now we know what to look for,” Needell says. “We really need to know the bed topography, and we need to know the ice thinning rate, in order to get ice cliff instability right, because this value really matters in the context of projecting sea level rise.”

Support from broken ice and seawater

Conditions in front of the cliffs offered additional clues. In the broader survey, cliffs that stayed roughly in place had thicker mélange, the slushy mixture of broken icebergs and sea ice that collects against a cliff’s ocean-facing edge.

“We measured mélange height and found taller cliffs have thicker mélange, which could be a built-in stabilizing effect,” Needell explains.

The satellite data also indicated that deeper surrounding water could help keep a cliff standing. The water buoys the ice and pushes back against it, providing support that can make collapse less likely.

“We found that when the cliffs were retreating, they were doing so faster than what has been modeled, which would mean more ice loss and higher contributions of sea level rise,” Needell says. “But because we found that the retreat was short-lived, and all the glaciers eventually stabilized, that would suggest that things won’t be so bad. We don’t see this runaway effect.”


The Life of Earth
https://chuckincardinal.blogspot.com/

Scientists Simulated the Universe – And Discovered the Milky Way May Be One of the Best Places for Life

By L. Barnes, G. Lewis and M. Filipovic, Western Sydney U., Oct. 18, 2026

Galaxy evolution in an EAGLE simulation.
 Credit: The EAGLE project/Durham University

Galaxy simulations suggest the Milky Way offers some of the universe’s best conditions for life, while smaller, more crowded galaxies remain less forgiving.

Earth seems like a troubled place right now, but at least our cosmic surroundings appear peaceful. But this is not universally true, as explosions, collisions, and other dangers lurk in other places and times.

In our new research, published in Monthly Notices of the Royal Astronomical Society, we scoured simulated universes to find the friendliest locations for life.

We discovered something reassuring: the Sun, sitting here in the outskirts of the Milky Way galaxy, is about as good as it gets.

The Goldilocks zones

Regions of the universe that would be friendly towards life are known as habitable or Goldilocks zones – they’re just right.

Whether life is actually there is another question. As astronomers and biologists explore how life could form on exoplanets (planets outside the Solar System), astrophysicists follow the structure and evolution of the universe to identify the nicest places, as well as those where life could be snuffed out in an instant.

So, where should we look for life?


The circumstellar habitable zone near a star is ‘just right’ – not too hot, not too cold.
 Credit: NASA



For example, there is a Goldilocks zone in the immediate neighborhood of stars. Too hot or too cold will not do. This “circumstellar habitable zone” is just right for liquid water instead of steam or ice.

Zooming out, we can look for the nicest places and times to live in our own Milky Way galaxy. A young star that’s too close to the galactic center will suffer in the hustle and bustle of all the nearby stars, whilst stars that are too far away will be in a sterile environment, devoid of the chemicals essential for life.

Just as Earth is in the Sun’s circumstellar habitable zone, the Sun is in the Milky Way’s “galactic habitable zone.”

Let’s zoom out even more. What about other galaxies?

Simulating the universe

We followed synthetic galaxy evolution using the EAGLE (Evolution and Assembly of GaLaxies and their Environments) project – one of the most realistic simulations of the observed universe.

They track the expansion of space, gravity’s pull, and the physics of gas, stars, and black holes, and provide us with a detailed map of what the universe looks like across hundreds of millions of light-years.

With such a map, we asked: where might life be most welcome?

https://www.youtube.com/watch?v=sE731syuNRA

Finding life, avoiding catastrophes

With no observations of alien life, we must make assumptions. The hydrogen and helium produced in the Big Bang are too simple to make organisms, so we focus on generations of stars that have seeded the cosmos with heavier elements essential for life.

Exoplanet observations reveal that Earth-like rocky planets require a certain concentration of those heavier elements. However, too much could produce a hot Jupiter, a gas giant that sweeps through the planetary system, eating rocky planets on the way. This is best avoided.

Our breakthrough involves detailed modeling of those things that are bad news for life. Big stars blow up, sterilizing their local environment. Bigger explosions, such as gamma-ray bursts, can fry a much larger volume. Paleontologists think that the Ordovician mass extinction 450 million years ago might have resulted from a nearby explosion.

There are other dangers to avoid. We wouldn’t want another star to wander through our Solar System and disrupt Earth’s nicely circular orbit. So, steer clear of crowded galactic neighborhoods.

Then there are the black holes. Most of these are small and don’t pose any danger, but in the hearts of galaxies lurk monsters. Weighing more than a million suns, these can roar into life as they swallow matter that gets too close. So, stay away as this can result in intense radiation that can strip the atmosphere off your planet.

A home among the galaxies

While we don’t know if life would form in these nice spots, they are the ones that offer the best conditions.

And the results tell us another thing: the Milky Way is rather nice.

This isn’t just a fondness for our own neighborhood. We could have found that life should exist in earlier galaxies, smaller ones, or farther from galaxy centers.

We find that our universe has created plenty of opportunities for habitation, though it seems to be slowing down as the rate of catastrophes catch up with the creation of new planets. Our Milky Way seems typical in the galaxies that have been efficient in turning the raw materials of the cosmos into life-friendly environments.

Similarly, the Milky Way, and its kindred, have put their energetic and dangerous days behind them and settled into a relaxed retirement. These days, even in a billion years of wandering around our Milky Way, less than one star in a thousand would experience an extreme, life-annihilating extinction event.

The story is different for smaller galaxies, which are far more numerous than the Milky Way, as they are too crowded and too energetic.

So, rest easy. And if you get the chance, buying a property in the Milky Way is probably a secure investment, astronomically speaking.


The Life of Earth
https://chuckincardinal.blogspot.com/

Sunday, 18 October 2026

Chuck's picture corner to Oct. 18, 2026

Fall , a time of change. Old friends have moved on beyond Life on Earth this past week.

Colours of the environment have changed dramatically. The days are getting short.

Time for me to clean the windows on the house, a near impossible chore once it gets too cold. I like to use a rain-x car windshield washing fluid, stuff in it helps water bead off the windows .

the back yard , the butternut is bare, and other species are beginning to follow suit.

The black walnut the squirrels love.

The silver maple and the crimson king maple planted the same day as 2 leaf seedlings.


Celebrations of our ancestors.

on the road home from Rachelle's through misty mountains.

The tree colours changing to ground colours at R's

grandma's residence while Rachelle hikes in Spain



the toad lily is still flowering.

as is the nasturtium, It's producing good seed for next year.

The first year more than a few pears from the tree.


Enjoy the day
https://chuckincardinal.blogspot.com/

Climate Change Could Unleash an African Antelope Invasion Across the American West

By U. of Illinois at Urbana-Champaign, Oct. 16, 2026

The African gemsbok (Oryx gazella) is a large, desert-adapted antelope native to the arid regions of southern Africa, particularly the Kalahari Desert. Recognized by its distinct black-and-white facial markings and long, straight horns, the gemsbok is exceptionally resilient to extreme heat and drought. Credit: Shutterstock

Climate change could give African antelopes an edge in the American West, with native wildlife facing tougher competition when drought leaves less to eat.

An antelope native to southern Africa’s Kalahari Desert has found a foothold in New Mexico’s dry rangelands, and climate change could give it far more of the American West to roam. Gemsbok were brought to the state for hunting in the 1960s and 1970s and have since spread more than 100 kilometers, or about 62 miles, from their release point.

A new study by researchers at the University of Illinois Urbana-Champaign suggests that suitable habitat could expand well beyond New Mexico by 2100, reaching into Texas, Arizona, Utah, California, and even southern Washington and Montana. The same adaptations that help gemsbok survive in arid country could give them an advantage over native wildlife as those conditions become more widespread, raising concerns about the animals and grasslands that would have to support growing herds.

“Gemsbok are famous for being really well adapted to heat and drought. In addition to other heat adaptations, they can get all of their water from plants, so they don’t really need to drink. That’s really unusual for animals that big — they can weigh 450 pounds. They’re the poster species for dealing with the kind of changes we’re going to see in the Southwest,” said study co-author Bob Schooley, professor and head of the university’s Department of Natural Resources and Environmental Sciences, or NRES.
Connected habitats could help gemsbok spread

The researchers built their forecasts around the places gemsbok already inhabit. For each recorded location, they examined precipitation, temperature seasonality, vegetation cover, terrain ruggedness, and human population density to identify the combination of conditions associated with the animals’ presence. People sharing wildlife photographs online supplied the sightings that made this analysis possible.

“We turned towards participant science to do this work. When people contribute photos to apps like iNaturalist, the occurrence records get scraped into something called the Global Biodiversity Information Facility. From that, we were able to use a statistical method called Maxent to find habitat associations for gemsbok,” said lead author Nathan Alexander. He began the research as a doctoral student in NRES, part of the College of Agricultural, Consumer and Environmental Sciences at Illinois, and is now a postdoctoral scholar at Southern Illinois University.


A new University of Illinois Urbana-Champaign study shows suitable habitat for introduced gemsbok could expand under climate change from their current range in New Mexico well into surrounding states.
 Credit: Jornada Basin LTER



Using those habitat associations, the team searched for similar environments elsewhere and projected where they could occur under future climate scenarios. The resulting maps suggest that gemsbok could gain more than additional land to occupy. Areas that are currently separated could become connected, potentially making it easier for the animals to move between them.

“When there are these isolated patches, there might be dispersal barriers that they can’t cross to get to the next patch. But when these patches coalesce and connect, there might be increased opportunities for gemsbok to invade and expand into these novel habitats. We see this particularly in western Texas, but also into western New Mexico and up into Arizona, and even some regions of California, like Death Valley,” said Kieran Andreoni. He began the research as a master’s student in NRES and is now conservation director at the Southern Plains Land Trust in Colorado.

When cattle leave, gemsbok keep grazing

Gemsbok would still have to reach that territory and establish populations for the projected habitat expansion to translate into a wider occupied range. If they do, larger herds could consume more of the forage that cattle and native grazers such as pronghorn and bison depend on, leaving less food to go around.

“Along with that diet overlap, gemsbok are able to forage on lower quality plant materials than some of our native species,” Alexander said. “So in drought years, we could imagine our native species might be a little bit more stressed and nutrient deficient, whereas the gemsbok are going to be able to move to less nutrient-rich plant material and still be able to persist in the environment.”

Gemsbok also left their natural predators, lions and hyenas, behind in Africa. Coyotes and mountain lions in the Southwest kill far fewer of the antelopes, according to Schooley. With relatively little pressure from predators and the ability to keep feeding as forage quality declines, growing herds could continue grazing land that is already struggling through drought.

“These desert rangelands are often used for cattle grazing. When there’s a severe drought, they pull the cattle off the landscape because there’s no food for them. Well, no one pulls the gemsbok off. Considering their ability to survive on low-quality forage, they could severely damage remaining grasslands. So I think that’s the kind of thing we worry about — what are the implications when they get to even larger numbers?” Schooley said.

Disease could follow expanding herds

Gemsbok in the Southwest have also tested positive for malignant catarrhal fever, bovine respiratory syncytial virus, and bovine para-influenza-3, all of concern to the cattle industry. Alexander said the antelopes could carry and spread diseases to domestic and native ungulates, or hoofed mammals, adding a potential disease risk to the competition for food.

Conservationists, ranchers, and hunting operations bring competing interests to decisions about gemsbok, making future population management difficult but critical, the researchers say. On New Mexico’s dry rangelands, and potentially far beyond them, keeping herds in check could help protect the food that cattle and native wildlife need when drought leaves less to share.


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Breathwork Really Can Induce an Altered State of Consciousness, Experiment Shows

18 Oct. 2026, By P. Dockrill

(Jacob Wackerhausen/iStockphoto/Getty Images)

Breathing is something we do every moment of our lives, usually without giving it a second thought.

While it's easy to take breathing for granted, changing the way we breathe can actually have profound effects on our health, altering how we feel, and even perhaps how we think.

These effects overlap with the practice of breathwork – a range of breathing exercises intended to influence your mental and emotional state, sometimes even helping to elicit psychedelic-like brain changes.

One particular breathing technique, called high ventilation breathwork, involves deliberately intensified rapid and/or deep breathing and is increasingly being used in therapeutic contexts.

In addition to helping people with stress and mental health, high ventilation breathwork is also reported to induce altered states of consciousness.

This can include experiences people normally associate with psychedelic drugs, such as perceptual alterations, emotional release, ego dissolution, and a sense of unity.

So what exactly is intensive breathing doing inside the brain to trigger such surreal sensations?


The findings show intensive breathing can produce a profound drop in cerebral blood flow. 
(Science Photo Library/Canva)



In a new study published in Progress in Neuropsychopharmacology and Biological Psychiatry, researchers found evidence that could explain how these mysterious side effects emerge.

"Many people who practice intensive breathwork report profound changes in perception and self-experience, yet the underlying brain mechanisms remain poorly understood," says neuroscientist Christian Schmitz from the Central Institute of Mental Health in Germany.

"Our study suggests that these experiences are linked not only to marked changes in cerebral blood flow, but also to alterations in how key brain networks communicate".

In the study, Schmitz and fellow researchers recruited 30 healthy adults who had previous experience with intensive breathwork, with an average age of 45.

During the experiment, the participants performed a self-guided intensive breathing technique called circular breathing – continuous, uninterrupted breathing, without the regular pause between exhaling and inhaling – while undergoing an MRI brain scan.

The results showed that high ventilation breathwork triggered a "profound reduction" in blood flow in the brain's gray matter at peak intensity, corresponding to a 45.5 percent drop compared to baseline, while also increasing heart and respiratory rate.

"The ∼45.5 percent reduction in gray matter cerebral blood flow represents a substantial hemodynamic perturbation produced by a voluntary, non-pharmacological intervention," the researchers write.

"While this reduction remains below the critical flow limit of 50–60 percent at which insufficient cerebral oxygenation has been reported, it approaches this threshold and substantially exceeds reductions typically observed in clinical hyperventilation paradigms."

At the group level, the researchers found no significant overall change in functional connectivity in the brain's default mode network (DMN), which is disrupted by psychedelic drugs such as LSD and psilocybin.

But individuals who reported feeling more intense altered states after the experiment showed some signs of greater changes in the DMN, although the effect was subject to how the data was processed, so should only be treated as a preliminary finding for now, which could be looked at in future research.

Interestingly, the cerebral blood flow reductions the experiment produced were not associated with individuals' DMN changes, nor with participants' subjective ratings of breathwork-induced altered states.

Overall, the participants ranked the intensity of what they were feeling as high during the breathing exercise (3.47 on average, on a 4-point scale). In a questionnaire after the session, participants' responses varied, but the group reported feelings of unity, changes in perception, and a reduced sense of self.

The researchers caution that the study involved only 30 experienced breathwork practitioners, with no control group, and that further research is needed to confirm the findings.

Despite the striking drop in cerebral blood flow, the researchers don't think it's single-handedly responsible for the altered states people feel during intensive breathing.

Rather, it's possible that the reduced blood flow in the brain (hypoperfusion) during intensive breathing might create the physiological conditions for altered consciousness, while changes in how different parts of the brain communicate could play a more direct role in determining the intensity of those experiences.

"These findings position breathwork-induced hypoperfusion as a permissive physiological condition for altered consciousness, with network-level reorganization serving as the more proximal neural correlate of experiential depth," the team writes.

"The results have implications for understanding the neurobiology of non-pharmacological altered states and for the potential development of breathwork-based therapeutic interventions."


The Life of Earth
https://chuckincardinal.blogspot.com/

Saturday, 17 October 2026

NASA Captures a Strange Formation on Earth With a Surprising Lunar Connection

By L. Doermann, October 16, 2026

A giant patch of Moon-like rock stands out in southern Madagascar, revealing an ancient geological connection between Earth and the Moon.
 Credit: NASA

A NASA astronaut captured a stunning 600-million-year-old rock formation in Madagascar that shares a surprising geological connection with the Moon.

A striking patch of bright rock in southern Madagascar has an unexpected connection to the Moon. Surrounded by rocks that were twisted and stretched by ancient geological forces, the formation contains anorthosite, the same type of rock that makes up much of the Moon’s bright highlands.

Viewed from space, the unusual formation stands out against Madagascar’s dry, rugged landscape. Anorthosite is an igneous rock found in abundance on the Moon, where it forms the highly reflective regions known as the lunar highlands. These pale regions are so prominent that they can be distinguished from Earth without a telescope.

Although closely associated with the Moon, anorthosite is also found in several places on Earth, including eastern Canada, Scandinavia, southern India, and Madagascar. In southern Madagascar, it forms a distinctive, roughly circular feature that is particularly noticeable in photographs taken from orbit.

NASA Astronaut Captures Ancient Moon-Like Rock Formation

On August 28, 2026, an astronaut aboard the International Space Station photographed the Saririaky anorthosite massif, a large body of rock exposed at Earth’s surface.

Anorthosite forms when magma cools and solidifies beneath the ground, allowing relatively large mineral crystals to develop. Rocks produced through this process are known as intrusive igneous rocks.

Scientists believe the Saririaky massif originated during the late Precambrian, making it at least 600 million years old. Today, the exposed formation extends across approximately 100 square kilometers (40 square miles).

The surrounding landscape provides evidence of the enormous geological forces that have acted on the region since the rock formed. Researchers have identified the massif within a ductile shear zone, an area where rocks were gradually stretched and distorted under intense heat and pressure.

These conditions caused the surrounding rocks to undergo metamorphism, changing their structure and producing long, roughly parallel patterns that extend from north to south.
Ancient Continental Collisions Reshaped Madagascar

Geologists suspect that this dramatic transformation occurred during the assembly of Gondwana, the enormous supercontinent that once united landmasses now separated by oceans.

As portions of present-day Africa, India, Madagascar, Australia, and Antarctica collided, tremendous pressure deformed the rocks caught between them. The resulting geological structures preserve evidence of those ancient continental movements.

Some researchers have suggested that a second anorthosite massif, located approximately 60 kilometers (40 miles) north of Saririaky within the same shear zone, may once have been connected to it.

According to this hypothesis, the immense forces associated with continental collision stretched and separated the original rock body. This process can produce a structure known as boudinage, in which a relatively resistant layer of rock is pulled apart into distinct segments as the surrounding material deforms.

How Earth’s Moon-Like Rocks Reveal Lunar History

Beyond their importance to understanding Earth’s geological past, anorthosite formations also provide scientists with valuable opportunities to investigate the Moon’s earliest history.

The Moon’s anorthosite rocks are more than 4 billion years old. Scientists believe they formed when the young Moon was covered by a vast ocean of molten rock. As this magma cooled, anorthosite crystallized and became a major component of the Moon’s outer crust.

Samples collected by Apollo astronauts have given researchers direct evidence of these ancient lunar materials. However, because the available Moon rocks are limited, scientists also examine similar formations on Earth to better understand their composition and formation.

One especially useful comparison comes from the Beartooth Mountains in Montana, where anorthosite closely resembles its lunar counterpart in chemical composition.

By examining these terrestrial formations, researchers can gain additional insights into the processes that shaped the Moon billions of years ago. Madagascar’s ancient anorthosite also illustrates how Earth’s own geological history has transformed rocks that share important characteristics with those found on our closest celestial neighbor.

Astronaut photograph ISS075-E-85249 was taken on August 28, 2026, using a Nikon Z9 digital camera equipped with a 400-millimeter lens. The image was captured by an astronaut from the Expedition 75 crew and supplied by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit at NASA Johnson Space Center. It has been cropped, adjusted to enhance contrast, and processed to remove lens artifacts.


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Scientists Find a Way to Turn Desert Sand Into 'Living Sand' That Holds Water Six Times Longer

16 Oct. 2026, By E. Öz

(Khalifa University)

For farmers working sandy ground, watering is only part of the job.

Water drains quickly through the gaps between grains, while wind can carry the loose sand away. Keeping plants alive means holding moisture around their roots and keeping the sand in place.

Scientists have now tested whether fibers produced by bacteria and fungi can bind those grains together.

Growing microbes directly in sand created a material they call "living sand," which tests showed could cut water loss by six times.

In a separate approach, they grew thin sheets of bacterial cellulose and placed them between sand layers, reducing water permeability about 28-fold in laboratory tests.

The study, published in Carbohydrate Polymers, involved researchers at Khalifa University in the United Arab Emirates, Switzerland's Empa research institute, and ETH Zurich.

In soil, roots, fungal threads, and fibers produced by microbes help hold particles together. The researchers tested whether similar microscopic networks could strengthen sand and change how water moves through it.


Sand samples reinforced with microbial fibers retain their shape in water. 
(Khalifa University)



They used a cellulose-producing bacterium, Komagataeibacter medellinensis, and two strains of the fungus Schizophyllum commune. The fungal strains belong to the same species but have different growth characteristics.

Cellulose gives plant cell walls much of their strength. Some bacteria also produce it, releasing extremely fine fibers that can form a mesh around nearby particles.

The study included sand collected from dunes near Al Ain in the UAE, along with standardized laboratory sand for certain strength tests. Researchers sterilized the sand before adding the microbes and nutrient solutions.

Microscope images showed bacterial cellulose attached to grain surfaces and linking neighboring grains.


Microscopy image showing biopolymer fibers connecting sand grains.
 (Khalifa University)



"This creates a kind of natural composite material," Gustav Nyström, who heads Empa's Cellulose and Wood Materials laboratory, said.

The bacterial treatment produced stronger samples than the fungi. Within seven days, a sand column about 6 centimeters tall held together well enough to be removed from its mold and cut into pieces. Those pieces stayed intact when placed in water.

The fungi also bound grains together, but their samples were more fragile. Some broke apart during removal from the molds or when cut after drying.

For the second approach, the researchers grew cellulose sheets separately and inserted them between layers of sand. The sheets acted as reinforcing fabric, helping distribute the force applied to the material.

In a demonstration using a 10-kilogram load, an untreated sand cube collapsed much more than a cube reinforced with cellulose sheets. Sheets grown for longer generally made the samples tougher. The sheets also produced the largest reduction in water permeability.

To test this, the researchers poured water into sand-filled tubes and timed how fast it drained out of the bottom. They compared untreated sand with sand containing fibers grown among the grains and sand containing a separately grown cellulose sheet. Each group had three replicate samples.

The inserted sheet cut permeability (or how fast the water passed through) to roughly one twenty-eighth of the untreated sand's value, while fibers grown directly inside the sand reduced it about six-fold.

The researchers also measured how much water the samples could hold. For sand containing fibers grown directly among the grains, this measurement rose from about 20.2 percent to 25.5 percent. The scientists describe that increase as slight.

The team suggests microbial fibers could provide biodegradable alternatives to some synthetic materials used to stabilize soil. Stronger connections between grains might also help limit wind erosion, although the experiments did not measure dust emissions.

"This approach allows us to introduce organic matter and water into the sand and stabilize it somewhat," said Nyström.

Three researchers, Blaise Tardy, M-Haidar A. Dali, and Mohamed Hamid Salim, disclosed a pending patent application in the paper's competing interests statement.

The work remains a laboratory study. The microbes received water and nutrients under controlled conditions, and their growth required oxygen. Growth was uneven along the bacterial sand column, and the top section was much weaker than the bottom.

The experiments did not test crop growth or establish how long the material would survive desert conditions.


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