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News
Researchers use "thunderquakes" to study structure of Earth's surface
28+ min ago (872+ words) Ars Technica Most of what we know about the Earth’s interior comes from following seismic waves. These travel at somewhat different speeds depending on the details of the rock they’re moving through—whether it’s solid or semi-molten, how much water…...
The missing 500 million: Cosmic bombardment melted Earth's first crust
1+ mon, 2+ week ago (340+ words) The heat of the Hadean may have come from impacts as well as the interior. Johnson and his colleagues are now arguing that the formation of continents on Earth was caused largely by an intense, sustained barrage of asteroid impacts…...
Want an oxygen-rich atmosphere? Stuff oxygen’s friends in the mantle.
2+ mon, 3+ week ago (385+ words) Getting carbon and sulfur into Earth’s interior may be part of oxygen’s story. Planet Earth has some pretty great qualities going for it. (Negative reviews mostly revolve around the staff and clientele.) Pretty high on the list of positives is…...
Scientists want to treat complex bone fractures with a bone-healing gun
10+ mon, 3+ week ago (322+ words) It’s a bit like a handheld 3D printer, with all the accuracy challenges that implies. Most guns are tools for doing harm, but a team of American and Korean scientists has developed one that does the opposite, helping to patch up…...
Formation of oceans within icy moons could cause the waters to boil
8+ mon, 3+ week ago (260+ words) A rigid ice shell over a shrinking interior makes for pressures low enough to boil. Something that has received a bit less attention is that some of these orbital interactions are temporary or cyclical. The orbits of any body are…...
"Million-year-old" fossil skulls from China are far older—and not Denisovans
6+ mon, 1+ day ago (618+ words) The revised age may help make sense of 2-million-year-old stone tools elsewhere in China. Two skulls from Yunxian, in northern China, aren’t ancestors of Denisovans after all; they’re actually the oldest known Homo erectus fossils in eastern Asia. (Side note:…...
New paper argues history, not mantle plume, powers Yellowstone
4+ mon, 1+ week ago (332+ words) A now-vanished plate under North America may open the crust below Yellowstone. Now, a new paper suggests that the Farallon plate is still making its presence felt far from the coasts, powering one of North America’s most distinctive phenomena: the…...
Oldest octopus fossil found to not be an octopus
4+ mon, 1+ week ago (580+ words) Supposed “first octopus” was something else entirely. To solve this puzzle, Thomas Clements, a paleontologist at the University of Leicester, and his colleagues put this supposed oldest octopus fossil through a series of high-tech imaging tests. They found Pohlsepia was…...
“Like putting on glasses for the first time”—how AI improves earthquake detection
10+ mon, 1+ week ago (1673+ words) AI is “comically good” at detecting small earthquakes—here’s why that matters. On January 1, 2008, at 1:59 AM in Calipatria, California, an earthquake happened. You haven’t heard of this earthquake; even if you had been living in Calipatria, you wouldn’t have felt…...
Tag: volcanic geology
1+ year, 2+ day ago (48+ words) Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is... Visitors have unearthed over 35,000 diamonds at Crater of Diamonds…...