One argument that often comes up about climate change is that fossil fuels are good because they powered economic growth that has left most people better off overall. And, to an extent, that has been true, but it's also an extremely limited perspective.

It's pretty obvious now that the growth they powered has come with very high costs that we've only recently started to pay, in the form of damages and disruptions from extreme weather events. With things like sea level rise expected to continue for centuries even if we hit net zero, it's difficult to estimate how expensive that growth will eventually be.

But that perspective is also limited: We now have better ways to power our growth—ways that are less environmentally damaging now and won't leave our descendants with a carbon debt that will be difficult to manage.

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It’s a regrettable reality that there is never enough time to cover all the interesting scientific stories we come across. So every month, we highlight a handful of the best stories that nearly slipped through the cracks. September’s list includes a tantalizing hint of the elusive dark matter at the LUX-ZEPLIN detector; entangled Z bosons at the Large Hadron Collider; possible use of psychoactive substances in the Late Pleistocene; and an intriguing technical description of a telescope attributed to Galileo.

A hint of dark matter?

Physicists believe dark matter makes up roughly 85 percent of matter in our universe, with the strongest (but not only) candidate being so-called weakly interacting massive particles (WIMPs). But directly detecting WIMPs, or other alternative hypothetical dark matter particles, has eluded physicists for decades. We might have our first glimpse, however, courtesy of the LUX-ZEPLIN detector buried deep in a gold mine in South Dakota. Those potentially exciting results were presented in a scientific talk at the 2026 TeV Particle Astrophysics conference in Japan, with a preprint available on the arXiv. (It has been submitted to Physical Review Letters for peer review.)

The announcement came with strong caveats: the signal is just a hint, well below the threshold needed to confirm discovery, and might just be a statistical fluke. Anyone who regularly follows dark matter news knows that past tantalizing anomalies evaporated as more data came in. But the LUX-ZEPLIN team was unable to account for this event and decided to report their result to the broader physics community. They are still collecting data, as is the XENONnT at the Gran Sasso National Laboratory in Italy. And China's PandaX detector is currently being built.

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Welcome to Edition 9.13 of the Rocket Report!

This week, SpaceX celebrated the first orbital launch of its new Starship rocket. I'm not sure many people, at least those outside of SpaceX, expected it to take 14 flights of Starship before it technically reached low-Earth orbit, but Monday morning's launch finally added that to SpaceX's list of accomplishments with its new super-heavy rocket. Starship had gone 99 percent of the way to orbit before, only held back by safety concerns around the possibility of stranding the huge rocket in space.

What was most notable for SpaceX with this Starship flight was that it unlocked a massive growth potential for Starlink, with the first 26 of the network's new-generation Starlink V3 satellites successfully deployed Monday.

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Venus is shrouded in a veil of mystery. The yellowish “lower haze” at the bottom of its atmosphere was discovered by the Venera and Pioneer Venus probes in the 1970s. These spacecraft were some of the first to successfully send images of the planet back to Earth, but the haze they saw went unexplained for decades. Now the mystery Venus was keeping has been unveiled.

What nobody knew then was that the haze is an accumulation of particles from meteorites. “Shooting stars” that burn up in the atmosphere leave behind cosmic dust particles, and after sulfuric acid interacts with these particles, it leaves behind a haze. Planetary scientist Hiroki Karyu and his research team at Tohoku University in Sendai City, Japan, finally figured out how the haze formed using a microphysical model. This type of model involves microphysics—the micro-scale processes that create clouds and precipitation on Earth and other bodies.

“The continuous influx of cosmic dust is sufficient to sustain this lower haze layer with the particle size distribution observed by the entry probes,” Karyu said in a study published in Nature Astronomy. “These haze particles of cosmic origin act as efficient condensation nuclei, promoting cloud formation in the main cloud deck even far from their initial source.”

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A four-person crew rocketed into orbit Thursday from Cape Canaveral Space Force Station, Florida, heading for a six-month expedition on the International Space Station.

Riding a Falcon 9 rocket and Dragon spacecraft, the four crew members departed from Space Launch Complex-40 at Cape Canaveral at 11:10 am EDT (15:10 UTC) Thursday. Nine minutes later, they were in orbit to begin closing in on the space station for docking Thursday evening.

The launch was delayed from mid-September to replace a balky valve in the Dragon spacecraft's propulsion system, a task that involved cutting into a propellant line inside the ship to swap out a faulty component.

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Deep Blue took down Garry Kasparov at chess in 1997, AlphaGo beat Lee Sedol at Go in 2016, and poker bots have been beating professionals for years. But one classic game called Stratego held out. Even DeepMind, with its exceptional budget, couldn't build a machine that reliably beat the best human players.

Now, a team of researchers from Carnegie Mellon, MIT, New York University, and Stanford University has done it. Their AI, called Ataraxos, beat Pim Niemeijer, arguably the best Stratego player of all time, 15 games to one, with four draws. And it took just 16 GPUs and a few thousand dollars to train it.

Hidden armies

In Stratego, each player gets 40 pieces representing military ranks, from a marshal down to a spy, plus bombs and a flag. You win by capturing the opponent's flag. Your opponent knows where your pieces are, but not what they are. Identities are revealed only when two pieces collide in battle—the weaker one is removed, and the identity of the winner is revealed. That makes Stratego an imperfect-information game, just like poker, which computers cracked years ago. “There's something super distinctive about Stratego, which is that it is a massive amount of hidden information that unfolds over a very long time scale,” said Eugene Vinitsky, a researcher at NYU and co-author of the study.

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About 66 million years ago, the Chicxulub asteroid smashed into Earth, kicking up tsunamis and dropping hot debris that annihilated non-avian dinosaurs and many other species. But not everything it left in its wake was destructive. This space rock hit what is now the partially submerged Yucatan Peninsula, and at the bottom of the ocean, the impact generated enough heat to create a hydrothermal system that persisted for 8 million years and may have been a hotbed of life.

When researchers drilled for samples in the impact zone in 2016, they studied the types of rock that had formed as a result of the asteroid strike. This gave more insight into what happened in the immediate and long-term aftermath of this cataclysmic event.

The collision was intense enough to cause deformation far beneath the surface. Subterranean effects reached 35 km (almost 22 miles) down, and included the melting an immense amount of rock. Exposure to seawater made that rock porous. As hot water seeped into the pores, a hydrothermal system formed. The hot water gushing into an isolated region of the freezing depths could have attracted microorganisms and possibly other life forms that were otherwise struggling to survive.

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Most implants like pacemakers and insulin pumps work in isolation. To help them coordinate with each other, a team of Georgia Tech researchers built a networking system that sends signals through body tissue instead of antennas and radio waves.

Radio problems

Implants that communicate today mostly rely on radio protocols like Bluetooth Low Energy or near-field communication (NFC). Both are a poor fit for in-body data transfer, says Alex Abramson, a Georgia Tech engineer and co-author of the new study.

The first problem is power. “If you want an implant to remain in an active state such that it can respond within milliseconds, it's very difficult to do that with the Bluetooth system,” Abramson said. According to the paper, Bluetooth components, when they’re activated, can cut an implant's battery life by up to 90 percent.

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AI-based tools seem to be causing security threats on a nearly daily basis, in part because we've been slow to recognize potential threats. One area where we seem to be ahead of the game, however, is in biosecurity.

As with most things biological, utility goes hand in hand with threats. We've developed increasingly sophisticated tools for designing proteins and seen some major successes, such as AI-designed enzymes that can digest plastics or block venom proteins. But these same tools could be used to make toxins or alter the behavior of viral proteins.

And the software we use to identify DNA sequences that encode potentially threatening proteins doesn't pick out AI-designed proteins, since nobody has characterized them well enough to know that they're threats. Nearly a year after that risk was flagged, it still wasn't clear what anyone could do about it.

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Old-fashioned striped barbershop poles turn in place on a vertical axis, but humans typically perceive the stripes moving upward rather than turning with the pole. It's a well-known visual illusion arising from processing biases in human vision. According to a new paper published in the journal Nature, a similar effect could explain how butterflies often evade predatory birds: Their flight patterns and wing patterns combine to make it hard for predators to accurately gauge speed and direction.

"The stripes and spots on many butterflies’ wings interfere with the way visual systems try to guess the direction and speed of moving things, boosting false motion cues while hiding the butterfly's true heading," said co-author George Hancock of the University of Exeter in Cornwall. "The illusions interfere with the predator’s most basic visual targeting system and disrupt the final ‘ballistic attack’ in the tens of milliseconds when it commits to grabbing its prey, with no time to change course. As a result, birds and other predators will often simply miss."

Butterfly wings have long fascinated scientists, ever since the first documentation of the growth of said wings back in 1938. By 2021, researchers at MIT had captured on video the unique structural growth of butterfly wings—continuously, as a butterfly develops inside its chrysalis—for the very first time. Butterfly wings are an example of structural color in nature: the bright iridescent colors don’t come from pigment molecules but from what physicists call photonic crystals. The scales of chitin (a polysaccharide common to insects) are arranged like roof tiles. Essentially, they form a diffraction grating, except photonic crystals only produce certain colors, or wavelengths, of light, while a diffraction grating will produce the entire spectrum.

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Back in the 1930s, scientists noticed that water fleas and rats fed restricted diets while young went on to live longer. The same effect has since turned up in fruit flies and mice. What we did not know was how a meal eaten in infancy could affect health weeks, months, or even years later. A recent Nature study might have found the answer.

A team led by Fumiaki Obata, a biologist at the RIKEN Center for Biosystems Dynamics Research in Kobe, Japan, found a protein that carries a record into adulthood of what fruit flies ate as larvae, influencing how long they live.

Hungry maggots

Lab fruit flies are fed a mix of yeast and sugar, with yeast being their main source of protein. “We decreased only the yeast concentration in the diet, from eight percent to either one or two percent,” Obata explains. This low-protein diet was introduced roughly halfway through the larval period. Once the flies emerged from their pupae as adults, they returned to standard food.

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Equipment to capture carbon dioxide from ambient air or smokestacks generally works through a sort of reversible filter. Air is passed through granules or a liquid that absorbs the CO₂, then that CO₂-loaded substance undergoes a process (usually heating) that causes it to let go of all that CO₂. The resulting gas can be collected in a separated stream.

It’s also possible to do a similar sort of operation on a smaller scale—like inside a battery. A new study from a team led by James Buchen of the University of Delaware demonstrates an example of a battery-based electrochemical carbon-capture technique that they say is more viable than previous attempts. It has the potential to require less energy—and therefore be cheaper—than the reversible-filter designs that currently dominate.

Carbon chemistry

The basic idea behind a device of this type is that hydroxide produced at the battery cathode reacts with CO₂, converting it to carbonate or bicarbonate that passes through the separator membrane to the anode. There, the lower pH causes the reaction to reverse, with carbonate turning back into CO₂ gas. The role of the cathode is to produce hydroxide ions; the role of the anode is to consume them.

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The infamous Carrington Event of 1859 has long been considered the first extreme space weather event, but there have been reports of minor disturbances to telegraph equipment during geomagnetic storms since the late 1840s. In 2013, scholars discovered an anonymous report published in 1871 in Nature describing how a "very intense magnetic disturbance" disrupted rail travel in Exeter on the southern coast of England in October 1841. If accurate, this would be the earliest such account. However, according to a paper published in the journal Space Weather, that 1841 date is most likely a typo, with the real railway disruption occurring several years later.

"Space weather is often discussed as a modern challenge because of our dependence on technologies such as satellites, communications systems and electricity networks," said co-author Jim Wild of Lancaster University. "What this study shows is that society has been experiencing the effects of space weather on technology for almost as long as electrical technologies have existed. The Exeter train delay is a fascinating story because it sits right at the point where emerging technologies first began to encounter the realities of the space environment."

The Carrington Event remains the most powerful geomagnetic storm in the scientific record, with strong auroral displays occurring all over the world, causing sparking and even a few fires in telegraph stations. Some of the auroras were so bright that people reported being able to read the newspaper by their light. The telegraph was a relatively new technology at the time, having first emerged in the 1830s, and the geomagnetically induced current—from a likely coronal mass injection from the Sun—knocked out telegraph systems. Some operators found they were still able to transmit and receive messages even after disconnecting the power supply, relying just on the powerful auroral current.

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Normally, we try to update you quarterly on what's going on with the US electric grid since it provides a nice view of developing trends and smooths out some month-to-month randomness. Unfortunately, I was out of the office when last month's data was released, so this will be a seven-month update on 2026 trends.

The top line item is that energy use is continuing to rise, albeit not as quickly as headlines about data centers might lead people to believe. Beyond data centers, there's a growing electrification—things like EVs and heat pumps—that is shifting energy demands onto the grid. Despite all of this, electricity use has risen by only 2 percent compared to the same period last year. At this time the previous year, demand had risen by 3 percent compared to the year prior.

Some of this may be due to continued improvements in efficiency, which had largely kept electricity demand stable throughout the early 2000s. And some of it may be because more data centers are generating their own power so that demand doesn't show up on the grid. So far, the growth in demand hasn't reached apocalyptic levels.

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The first in a new class of space telescopes is on track to reach the launch pad in the early 2030s, NASA announced this week.

The PRIMA mission will be the first of NASA's Probe Explorers, a new line of observatories intended to do more science for less money. The agency's space telescopes typically fall into lower-cost "Explorer-class" missions, with cost caps in the range of a few hundred million dollars, or flagship observatories like the recently launched Nancy Grace Roman Space Telescope, which came with a price tag of some $4.3 billion.

With the Probe Explorers, NASA officials seek to find a better balance between the smaller Explorer missions and multibillion-dollar flagships. NASA has studied potential Probe Explorer mission concepts for several years after an independent panel of scientists recommended the new mission category. But it wasn't clear until recently whether NASA's science budget, which is under pressure from the Trump administration, would be sufficient to actually start developing one.

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For most of the last century, T. rex was pictured as a sluggish, tail-dragging reptile that had to warm up in the sun before it could go anywhere. Then, further research changed that view, replacing it with the active, bird-like animal shown in the movie Jurassic Park. But whether T. rex used warm blood to power that activity remained a question. Now we might have gotten closer to an answer.

A team of researchers led by Randon J. Flores and Robert A. Eagle, geochemists at the University of California, Los Angeles, has measured the T. rex body temperature by analyzing its teeth. This dental thermometer read about 36° Celsius—roughly the body temperature of a modern elephant.

Dental thermometry

Paleontologists have long argued about dinosaur physiology based on indirect evidence like bone microstructure, growth rates, and where fossils turn up on the map. Some studies suggested many dinosaurs were endotherms, generating their own body heat like birds and mammals. Others argued that each lineage may have had its own thermal strategy.

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Learning another language is a highly complex mental activity. It requires people to remember words, distinguish unfamiliar sounds, recognize patterns, work out grammatical rules, and retrieve the right expression at the right moment. All of this happens while listening, interpreting, and preparing a response.

Could all this mental activity also help keep an aging brain healthier? Research suggests it can.

Concerns about memory and dementia can send aging adults looking for ways to exercise their brain and maintain cognitive function, whether it is solving crossword puzzles or playing a musical instrument. Language learning might not seem like the same kind of brain exercise, but it is a complex activity that engages several mental processes at once.

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For decades, astronomers thought rings were something only giant planets had. That changed in 2013, when a small, dark body orbiting between Saturn and Uranus passed in front of a star and blinked twice on either side of the main event, revealing two narrow rings around an object barely 250 kilometers across. “It was a surprise,” says Pablo Santos-Sanz, an astronomer at the Instituto de Astrofísica de Andalucía in Granada, Spain. Ever since, the question has been what such rings are made of and how long they can last.

In a recent study, Santos-Sanz and his colleagues used the James Webb Space Telescope to watch the same body, now known as Chariklo, pass in front of a background star again. They found one of its rings had grown denser and the other had almost vanished. We don’t know exactly why.

Shadowing a star

The technique behind the observation is simple. “We predict when a Solar System object passes in front of a star,” Santos-Sanz said. The starlight dims for a moment, and the shape of that dip reveals the size, shape, and surroundings of the object that caused it. “This is particularly challenging for minor bodies, and more challenging for distant minor bodies,” he said.

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For a long time, sleep research has treated the cerebral cortex as a passive follower reacting to signals from the deep brain. “Usually, sleep is associated with being controlled by subcortical regions,” said Geoffrey Terral, a neuroscientist at the Albert Einstein College of Medicine in New York.

The cortex is where the slow rhythms of deep sleep can be seen, but researchers assumed the signals that triggered them originated elsewhere. In a recent Nature study, Terral and Renata Batista-Brito, who runs the lab, report a population of cortical cells that challenges that assumption.

These cortical cells make up only around one percent of the cortex's inhibitory neurons, and switching them on in a mouse puts the animal to sleep. “What our work shows is that the cortex can not only see this rhythm but also initiate it by itself, and this is sufficient to promote sleep,” Terral said.

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