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 native…
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 and…
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 met…
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 combination…
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 406…
The Moon has been romanticised for centuries, but few people have ever tried to give someone a piece of it. In 2002, that idea became part of an extraordinary theft at Nasa’s Johnson Space Center, where an intern helped remove a safe containing Apollo lunar samples and other irreplaceable scientific material. The stolen collection included…
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 of…
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 Conservation…
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, a…
An invasive beetle wiped out black ash trees across parts of North America Researchers have created a living seed bank to protect North America’s endangered black ash trees from extinction after decades of damage from an invasive insect. Led by scientists at Pennsylvania State University, the conservation project has successfully germinated 22,000 black ash seeds…
