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One Mount Etna eruption took weeks. Another happened in hours
11+ hour, 50+ min ago (691+ words) Mount Etna’s ancient eruptions followed radically different paths, with some magma lingering near the surface for weeks while other magma raced upward from nearly 30 kilometers deep in just hours. Scientists traced the difference to volcanic gases such as carbon dioxide…...
UNESCO warns there’s close to a 100% chance of a Mediterranean tsunami
4+ day, 8+ hour ago (1168+ words) On the French Riviera, a tsunami could arrive before a warning reaches people on the beach. In some local scenarios, the first waves could reach shore in under 10 minutes. France's national warning center, meanwhile, is designed to send its initial…...
Devil’s Arrows: Ancient builders hauled 55,000-pound stones 11 miles for Britain’s tallest stone row
5+ day, 7+ hour ago (719+ words) Ancient builders hauled enormous 25-tonne (55,000-pound) stones across at least 18 kilometers (11 miles) to create Britain's tallest surviving prehistoric stone row, according to new research into the iconic Devil's Arrows. The study, led by Curtin University in collaboration with the University…...
Geologists reveal the Americas collided millions of years earlier than thought
5+ day, 10+ hour ago (41+ words) Volcanic rocks in Colombia are rewriting the timeline of the collision between Central and South America. Their magnetic signatures show that major tectonic deformation had already weakened by the late Miocene, suggesting the most intense collision occurred earlier than previously…...
Giant new dinosaur discovered beneath construction site in Brazil
6+ day, 2+ hour ago (507+ words) Scientists have identified a giant new dinosaur from Brazil that reached about 20 meters long and lived 120 million years ago. Its surprising evolutionary ties to a Spanish dinosaur suggest its ancestors crossed ancient land connections between Europe, Africa, and South America....
The American “cheetah” wasn’t a cheetah at all
6+ day, 3+ hour ago (109+ words) The extinct “American cheetah” was not really a cheetah at all, but a puma relative with an unexpectedly flexible lifestyle. Fossils from the Yukon suggest northern populations survived partly by eating fish, possibly including salmon, while southern cats hunted on…...
Deep beneath Mars, scientists find a vast hidden magma system
1+ week, 3+ day ago (251+ words) Deep beneath Mars, scientists have found evidence of enormous magmatic systems once thought to require Earth-like plate tectonics. Seismic measurements suggest molten rock repeatedly evolved and recycled itself through the Martian crust, potentially across hundreds or thousands of kilometers. The…...
Ancient “living fossils” may reveal how complex life began
1+ week, 4+ day ago (1115+ words) At first glance, stromatolites and their close relatives, microbial mats, can look like little more than dark, ancient rocks. In reality, they are densely packed, layered communities built by microbes. Billions of years ago, before animals and plants existed, stromatolites…...
A coffee-table-size scorpion roamed Earth before forests existed
1+ week, 5+ day ago (490+ words) A meter-long scorpion with massive pincers stalked ancient Britain 415 million years ago, long before forests and the better-known age of giant insects. Its surprising size and possible semi-aquatic lifestyle could reshape ideas about how early arthropods became giants....
A massive plume deep beneath Africa is pulling the continent apart
1+ week, 6+ day ago (1058+ words) Computer models are helping scientists explain a puzzling pattern of deformation beneath the East African Rift System. The results point to the African Superplume, a vast upwelling of hot mantle material deep inside Earth, as the source of unusual motion…...