Science

As tensions over Greenland rise, some Europeans are asking whether it is time to disentangle themselves from US tech dominance – but from smartphones to cloud services, rejecting US tech is easier said than done

It is theoretically possible for a particularly massive star to collapse in on itself to form a black hole rather than exploding in a supernova, and we might now have seen the process in action

The early stage of giant telescope development involves a lot of horse-trading to try to appease all the different stakeholders that are hoping to get what they want out of the project, but also to try to appease the financial managers that want to minimize its cost. Typically this horse-trading takes the form of a series of white papers that describe what would be needed to meet the stated objectives of the mission and suggest the type of instrumentation and systems that would be needed to achieve them. One such white paper was recently released by the Living Worlds Working Group, which is tasked with speccing out the Habitable Worlds Observatory (HWO), one of the world’s premiere exoplanet hunting telescopes that is currently in the early development stage. Their argument in the paper, which is available in pre-print on arXiv, shows that, in order to meet the objectives laid out in the recent Decadal survey that called for the telescope, it must have extremely high signal-to-noise ratio, but also be able to capture a very wide spectrum of light.

In the 13.8 billion years that our universe has been around, some moments stand out over others – for the most exciting and impactful one, we have to go back to the very beginning, says cosmology columnist Leah Crane

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.

As global energy demand surges—driven by AI-hungry data centers, advanced manufacturing, and electrified transportation—researchers at the National Renewable Energy Laboratory have unveiled a breakthrough that could help squeeze far more power from existing electricity supplies. Their new silicon-carbide-based power module, called ULIS, packs dramatically more power into a smaller, lighter, and cheaper design while wasting far less energy in the process.

The protein that protects tardigrade DNA from radiation and mutagenic chemicals was thought to be harmless, but can in fact have major downsides

Inside the cores of ice giant planets, the pressure and temperature are so extreme that the water residing there transitions into a phase completely unfamiliar under the normal conditions of Earth. Known as “superionic water”, this form of water is a type of ice. However, unlike regular ice it’s actually hot, and also black. For decades, scientists thought that the superionic water in the core of Neptune and Uranus is responsible for the wild, unaligned magnetic fields that the Voyager 2 spacecraft saw when passing them. A series of experiments described in a paper published in Nature Communications by Leon Andriambariarijaona and his co-authors at the SLAC National Accelerator Laboratory and the Sorbonne provides experimental evidence of why exactly the ice causes these weird magnetic fields - because it is far messier than anyone expected.

Eruptions from volcanic arcs, found where tectonic plates converge, are one of the major drivers of natural carbon emissions, but a model of Earth’s ancient carbon cycle suggests this is a relatively recent phenomenon

As 2026 dawns, look for HHS Secretary Robert F. Kennedy Jr. to ramp up his assault on vaccines using policy-based evidence making and altering Vaccine Court standards.

The post RFK Jr. is definitely coming for your vaccines (part 6): Liability, ethics, and policy-based evidence making first appeared on Science-Based Medicine.

Solid-state batteries could store more energy and charge faster than today’s batteries, but they tend to crack and fail over time. Stanford researchers found that a nanoscale silver treatment can greatly strengthen the battery’s ceramic core. The silver helps seal tiny flaws and prevents lithium from causing further damage. This simple approach could help unlock next-generation batteries.

Here we have an 83-minute interview of Matthew Crick by Michael Shermer; the topic is Francis Crick as described in Matthew’s new book Crick: A Mind in Motion. Talking to a friend last night, I realized that the two best biographies of scientists I’ve read are Matthew’s book and Janet Browne’s magisterial two-volume biography of Darwin (the two-book set is a must-read, and I recommend both, though Princeton will issue in June a one-volume condensation).

At any rate, if you want to get an 83-minute summary of Matthew’s book, or see if you want to read the book, as you should, have a listen to Matthew’s exposition at the link below.  I have recommended his and Browne’s books because they’re not only comprehensive, but eminently readable, and you can get a sense of Matthew’s eloquence by his off-the-cuff discussion with Shermer.

Click below to listen.

I’ve put the cover below because Shermer mentions it at the outset of the discussion:

A huge bar of iron has been discovered lurking inside the iconic Ring Nebula. The structure is enormous, spanning hundreds of times the size of Pluto’s orbit and containing a Mars-sized amount of iron. It was detected using a new instrument that allowed astronomers to map the nebula in far greater detail than ever before. The origin of the iron bar is still a mystery, with one theory suggesting it could be the remains of a vaporized planet.

When scientists sent bacteria-infecting viruses to the International Space Station, the microbes did not behave the same way they do on Earth. In microgravity, infections still occurred, but both viruses and bacteria evolved differently over time. Genetic changes emerged that altered how viruses attach to bacteria and how bacteria defend themselves. The findings could help improve phage therapies against drug-resistant infections.

I now have two sets of photos after this one, but I’m still nervous. If you have good wildlife photos, please sent them in. Thanks!

It’s been a cold week in Chicago (right now it’s 9°F or -13°C), and it’s going to be cold this coming week as well. I hope the turtles at the bottom of Botany Pond are okay. But given the weather it’s appropriate that today we have photographs of Antarctica from reader Paul Turpin.  Paul’s captions are indented, and you can enlarge the photos by clicking on them.

My brother Mark recently returned from a cruise to the Antarctic on the Scenic Eclipse. I told him you loved penguins and he gave me permission to send you these photos.  I believe these are all gentoo penguins [Pygoscelis papua] except for one which included a chinstrap friend [Pygoscelis antarcticus].  The open water photo is when they were at the Antarctic Circle. 

A new census of more than 8,000 galaxies finds active black holes rising in frequency with galaxy mass, jumping sharply in galaxies similar in mass to the Milky Way.

Engineers have created a device that generates incredibly tiny, earthquake-like vibrations on a microchip—and it could transform future electronics. Using a new kind of “phonon laser,” the team can produce ultra-fast surface waves that already play a hidden role in smartphones, GPS systems, and wireless tech. Unlike today’s bulky setups, this single-chip device could deliver far higher performance using less power, opening the door to smaller, faster, and more efficient phones and wireless devices.

Engineers have created a device that generates incredibly tiny, earthquake-like vibrations on a microchip—and it could transform future electronics. Using a new kind of “phonon laser,” the team can produce ultra-fast surface waves that already play a hidden role in smartphones, GPS systems, and wireless tech. Unlike today’s bulky setups, this single-chip device could deliver far higher performance using less power, opening the door to smaller, faster, and more efficient phones and wireless devices.