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News
Africa’s savanna existed millions of years earlier than expected
1+ hour, 31+ min ago (1038+ words) Ancient ocean sediments reveal that Africa’s open grasslands began forming millions of years earlier than previously thought, long before modern grasses took over. The African savanna is one of the most recognizable landscapes on the planet: open grass, a few…...
Ultra-processed foods may not be as unhealthy as we thought
1+ hour, 47+ min ago (1050+ words) A 30-year study of more than 200,000 adults challenges a common assumption about ultra-processed foods and what matters most for long-term health. Canned beans, whole-grain breakfast cereal, and fortified soy milk carry the same ultra-processed label as soda, French fries, and…...
Earth’s mass extinctions share a surprising hidden pattern
2+ hour, 12+ min ago (1225+ words) A study spanning 539 million years reveals a hidden pattern linking major shifts in Earth’s climate and carbon cycle with periods when life was most vulnerable. Every mass extinction comes with a named culprit. At the end of the Cretaceous it…...
America’s last roadless forests: Why the federal government wants to open protected wilderness to logging and roads
4+ hour, 29+ min ago (1363+ words) Millions of acres of roadless forests could soon lose federal protections, with consequences stretching from grizzly habitat to salmon streams. Drive far enough into a national forest and the road ends. Past that point, a 2001 rule has kept tens of…...
Microplastic pollution may be stressing oysters along the Gulf coast
12+ hour, 14+ min ago (1154+ words) Wild oysters along the Texas Gulf Coast contained larger microplastic particles and showed more chemical stress than oysters kept in filtered seawater. An oyster feeds by pumping seawater over its gills and straining out whatever is small enough to swallow....
Scientists turn plastic bottle waste into vanilla-scented cookies
10+ hour, 30+ min ago (968+ words) using engineered yeast and 3D printing. A discarded water bottle and a pile of corn stalks sound like the last things anyone would put near a cookie tray. Yet researchers have used their carbon-rich components to create a protein-rich, vanilla-scented food…...
Public acts of kindness can have a powerful influence on your reputation
12+ hour, 22+ min ago (985+ words) A new computer model suggests that people update their opinions about both the person giving help and the person receiving it. People build reputations through their own actions, but the actions of others also shape how they are perceived. A…...
El Niño events are now stronger than any in the past 1,000 years
12+ hour, 21+ min ago (818+ words) Coral records reveal that El Niño events have grown nearly 40 percent stronger in recent decades than they were before the industrial era. A new study has found that El Niño events have grown nearly 40 percent stronger over the last four…...
Earth’s ancient forests carry a warning for forests today
1+ day, 10+ hour ago (1273+ words) Fossils from Wyoming show how extreme warming stripped away a third of the forest canopy 56 million years ago, echoing changes now underway in forests today. Carbon dioxide is plant food, so more of it in the air should mean fuller…...
Cats leave a unique scent signature that other cats can recognize
1+ day, 4+ hour ago (1021+ words) Cats may recognize each other through unique fatty acid signatures in urine that remain stable for hours after a scent mark is left. A cat walks up to a spot another cat used, sniffs it, then pulls its lips back…...