[ad_1] PC: Eocene penguin fossils as archives of Antarctic weathering and climate change: insights from micro-X-ray fluorescence elemental mapping Fifty-five million years ago, Antarctica looked nothing like the frozen continent we know today. Its coastlines were warm and humid, its shores home to some of the earliest penguins ever to exist, and its rocks were…
[ad_1] A pair of ornamental swans bought for a private pond in Montana in the 1960s eventually became the starting point for a very different kind of wildlife story. By the late 1970s, the flock in Paradise Valley had grown to 120, drawing the attention of Yellowstone National Park officials concerned about possible competition with…
[ad_1] The method, called Extreme Event Aware, or “η-learning”, does not need previous extreme events to create these scenarios. (Representational AP photo) What would a once-in-a-century storm look like if it was stronger than anything recorded before? Researchers at the Massachusetts Institute of Technology (MIT) have developed a machine-learning method that can generate realistic scenarios…
[ad_1] Representative Image (AI-generated) For humans to travel deeper into space and remain there for months or even years, they will need much more than powerful rockets. Astronauts must have a continuous supply of oxygen, water and food, while waste and carbon dioxide must be carefully managed. On short missions, these needs can largely be…
[ad_1] A red fox introduced to California more than a century ago might seem far removed from the fate of a small marsh bird. Yet the two became linked in the coastal wetlands of Southern California, where the light-footed Ridgway’s rail has struggled to survive. The bird spends much of its time concealed among cordgrass…
[ad_1] For years, the dense loops of repetitive DNA clustered near the middle of chromosomes were treated as evolutionary clutter. According to the new study published in Nature, titled ‘Meiotic pairing through barcode-like satellite DNA repeats‘, researchers working with fruit flies have shown that this so-called satellite DNA forms a kind of barcode: a unique…
[ad_1] Scientists have traced hidden pathways through animal evolution by comparing thousands of genomes and following pieces of chromosomes that have survived for hundreds of millions of years. The study examined 5,821 chromosome-scale genomes from 4,454 species across 19 animal phyla, using 29 ancient linkage groups as markers of chromosome history. Every one of the…
[ad_1] Researchers transporting Galvezia leucantha subsp. Leucantha at the restoration site, preparing for its planting A critically endangered shrub that once came close to disappearing from the Galápagos Islands is showing signs of a slow but important recovery after a careful conservation effort lasting nearly three decades. According to findings published in the journal Nature…
[ad_1] Deep inside a crystal cooled to nearly -230°C, MIT physicists have caught something rarely seen in quantum materials: two populations of electrons rebuilding themselves into wave-like order after being scattered apart by laser light, and doing so in two completely different ways. Working with erbium tritelluride, a rare-earth material known for hosting a pair…
[ad_1] forever checmicals(Representative image) Per- and polyfluoroalkyl substances (PFAS) are often called “forever chemicals” because their ultra-strong carbon–fluorine bonds make them stubbornly resistant to breakdown in the environment. They’re prized in industry for repelling water, oil and heat, but that same durability means they persist in soil, water and living tissue long after use. Now,…
