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Rocks reveal how Earth recycles continents deep underground
1+ day, 6+ hour ago (845+ words) Rock formations appear in old mountain belts tens of millions of years after a collision ends. Their chemistry " a blend of deep mantle and continental rock " shows up consistently worldwide, with the same fingerprint every time. Geologists have never had…...
Hidden canyons off Italy's coast may be moving toward shore, raising tsunami concerns
1+ day, 8+ hour ago (820+ words) Most people picture tsunamis beginning far offshore. A fault ruptures deep beneath the ocean floor, and a wave travels across open water for hours before reaching land. That picture misses something happening right at the waterline. Off parts of Italy's…...
Canadian fossils may rewrite the origin story of animal life
2+ day, 6+ hour ago (1024+ words) For three billion years, if you'd looked at life on Earth, you'd have seen nothing." Not nothing in the sense of empty space " the oceans were full " but nothing visible, nothing that moved, nothing with a body. Just microbes, everywhere,…...
Deep-sea creatures have fed on the same whale skeleton for decades
2+ day, 8+ hour ago (800+ words) Back in 2010, researchers spotted a whale skeleton resting 4, 200 feet below the surface off Vancouver Island. The bones were already colonized, and the soft tissue was long gone. The experts estimated that the carcass would likely vanish within a decade. That…...
While there is no doubt T. rex was an American native, there is fierce debate about exactly where its ancestors came from
2+ day, 6+ hour ago (786+ words) Paleontologists have had a working theory about T. rex for decades: the true giants came late. Tyrannosaurs that topped 4 tons " the class of predator that eventually produced T. rex " were thought to appear only in the final few million years before the…...
Greenland's retreating ice sheet linked to rapid methane release
3+ day, 7+ hour ago (837+ words) The world's ice sheet methane reserves have long been treated as a slow-moving climate threat. Ocean warming will eventually destabilize the frozen solids holding this gas in place, but the process was supposed to take decades or longer. Nobody expected…...
Fish diets are driving evolution deep inside their cells
3+ day, 10+ hour ago (762+ words) Ask what a cichlid fish eats, and a biologist usually checks the jaw. Scraping teeth point to algae. A wider gape suggests something else ended up on the menu. That link between mouth shape and diet has been documented across…...
Discovery overturns long-held assumptions about Earth's earliest complex lifeforms
3+ day, 23+ hour ago (981+ words) Life on Earth became complex very slowly. Before forests, fish, or dinosaurs existed, tiny cells called eukaryotes appeared. These cells later gave rise to plants, animals, and fungi. Scientists have long wondered where these early cells lived. A new study…...
Scientists may have solved the long-standing mystery of Blood Falls, the glacier that 'bleeds' red water in Antarctica
4+ day, 4+ hour ago (887+ words) Blood Falls is an outflow of iron-rich, hypersaline water that seeps from beneath Taylor Glacier in Antarctica's Mc Murdo Dry Valleys. Its striking red color is caused by iron oxides forming when the ancient, oxygen-free brine contacts air. Scientists have…...
T. rex traded its arms for one of the deadliest bites in history
4+ day, 9+ hour ago (828+ words) For decades, the tiny arms of Tyrannosaurus rex have inspired jokes more often than scientific respect. A predator that stretched over 40-feet-long and weighed several tonnes somehow ended up with forelimbs that looked oddly undersized. Popular culture treated them as…...