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A young woolly mammoth now known as Yuka was frozen in the Siberian permafrost for about 40,000 years before it was discovered by local tusk hunters in 2010. The hunters soon handed it over to scientists, who were excited to see its exquisite level of preservation, with skin, muscle tissue, and even reddish hair intact. Later research showed that, while full cloning was impossible, Yuka’s DNA was in such good condition that some cell nuclei could even begin limited activity when placed inside mouse eggs.

Now, a team has successfully sequenced Yuka’s RNA—a feat many researchers once thought impossible. Researchers at Stockholm University carefully ground up bits of muscle and other tissue from Yuka and nine other woolly mammoths, then used special chemical treatments to pull out any remaining RNA fragments, which are normally thought to be much too fragile to survive even a few hours after an organism has died. Scientists go to great lengths to extract RNA even from fresh samples, and most previous attempts with very old specimens have either failed or been contaminated.

A different view

The team used RNA-handling methods adapted for ancient, fragmented molecules. Their scientific séance allowed them to explore information that had never been accessible before, including which genes were active when Yuka died. In the creature’s final panicked moments, its muscles were tensing and its cells were signaling distress—perhaps unsurprising since Yuka is thought to have died as a result of a cave lion attack.

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Der Wera Werkzeug Adventskalender 2025 wird zum bisher besten Amazon-Preis feilgeboten. Doch wie lange noch? Bosch ist schon vergriffen. (Technik/Hardware)

Our best friends come in a fantastic array of shapes and sizes; a Borzoi looks nothing like a Boston terrier, except for a certain fundamental, ineffable (except to taxonomists) doggyness about them. And it’s been that way almost from the beginning. A recent study of dog and wolf skulls from the last 50,000 years found that dogs living just after the last Ice Age were already about half as varied in their shape and size as modern dogs.

“Shaped like a friend” means a lot of different things

Biologist and archaeologist Allowen Evin, of CNRS, and her colleagues compared the size and shape of 643 skulls from dogs and wolves: 158 from modern dogs, 86 from modern wolves, and 391 from archaeological sites around the world spanning the last 50,000 years. By comparing the locations and sizes of certain skeletal landmarks, such as bony protrusions where muscles attached, the researchers could quantify how different one skull was from another. That suggested a few things about how dogs, or at least the shapes of their heads, have evolved over time.

The team’s results suggest that dogs that lived during the Mesolithic (before settled farming life came into fashion in the Middle East) and the Neolithic (after farming took off but before the heyday of copper smelting; 10,000 BCE is a general starting point) were a surprisingly diverse bunch, at least in terms of the size and shape of their skulls.

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A Chinese plant scientist at the University of Michigan, who drew national attention in June 2025 when she was arrested and accused along with another Chinese scientist of smuggling a crop-damaging fungus into the US, pleaded guilty on November 12, 2025, to charges of smuggling and making false statements to the FBI. Under her plea agreement, Yunqing Jian, 33, was sentenced to time served and expected to be deported.

Her arrest put a spotlight on Fusarium graminearum, a harmful pathogen. But while its risk to grains such as wheat, corn, and rice can be alarming, Fusarium isn’t new to American farmers. The US Department of Agriculture estimates it costs wheat and barley farmers more than $1 billion a year.

Tom Allen, an extension and research professor of plant pathology at Mississippi State University, explains what Fusarium graminearum is and isn’t.

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Bundeskanzler Friedrich Merz will nach Möglichkeit auch 5G-Ausrüstung durch "selbst produzierte Komponenten" ersetzen. Bei 6G will er ein Verbot. Eine Analyse von Achim Sawall (6G, Huawei)

Gleich drei Geräte von Belkin können gegebenenfalls überhitzen und Feuer fangen - Nutzer sollen sie daher umgehend zurückschicken. (Belkin, Verbraucherschutz)

Back in 2012, Dishonored earned the first Game of the Year honor of my tenure at Ars Technica. Looking back on the game some 13 years later, Arkane’s well-constructed world of steam punk magical realism earns its place as a modern classic.

The game does a great job of drawing you into that world immediately, with a memorable opening sequence that sees you framed for the on-screen murder of the empress you’ve been sworn to protect. The scene does a great job establishing the emotional stakes of the coming missions while also throwing you into the deep end of the political infighting that has consumed a besieged, plague-beset kingdom.

A Victorian steam punk world you can lose yourself in. Credit: Arkane Studios

Those stakes, and a battle against a real feeling of injustice, drive the plot through some admittedly predictable beats as Dishonored continues through a set of sneak-and-assassinate missions. But it’s hard to care about that predictability when even minor side characters on both sides of the conflict quickly develop from stereotypes to engaging, fleshed-out characters.

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Ein Berliner Gericht spricht Idealo 465 Millionen Euro Schadenersatz zu, weil Google seinen eigenen Vergleichsdienst bevorzugt haben soll. (Google, Rechtsstreitigkeiten)