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Biology
Dinosaur skeleton sold for 6 million euros at Paris sale
The buyer promised to donate the Apatosaurus, nicknamed Vulcan, to a museum. A 22-metre (70-foot) dinosaur skeleton sold for 6 million euros (about 640 million yen) on Saturday, AFP heard from auction houses Colins du Bocage and Barbarossa. An anonymous collector has bought a vegetarian Apatosaurus rex unearthed in the United States for 4.7 million euros, or 6 million euros…
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Earth
New research reveals deep-sea clues that solve the mysteries of the ice age 1 million years ago
Researchers analyzed sediment core samples collected by D/V JOIDES Resolution near Cape Town, South Africa. Their discoveries reveal details about changes in temperature and salinity in the deep ocean, as well as the history of mixing of water originating from both the Northern and Southern Hemispheres. Credit: Sophie Hines, Woods Hole Oceanographic Institution A study recently published in the journal…
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Earth
Tracking missing mantle plume in ancient Samoa: researchers shed light on 30 million year gap
Bathymetric map of the Pacific region focusing on the trajectory of Samoa’s Hotspot 100 Mil, from Samoa’s hotspot active volcanoes (Vailuluu Seamount) to the Dutton Ridge (near the Mariana Trench). Credit: AGU Advances (2024). DOI: 10.1029/2023AV001079 As magma plumes rise through the Earth’s lithosphere, volcanoes, islands, seamounts, and other features form on the Earth’s surface. As tectonic plates move over…
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Earth
Ocean dust identifies oldest ice near South America dating back 1.5 million years
Benthic foraminiferal oxygen isotopes and marine and ice dust records from ODP site 1090, IODP site U1537, Dome Fuji (DF), and Epica Dome C (EDC). Dating back up to 2 million years. Climate cycles are indicated by dominant patterns of 40,000-year, 100,000-year, and irregular mid-Pleistocene transitions (MPTs). Credit: Past Climate (2024). DOI: 10.5194/cp-20-1437-2024 Earth’s climate has experienced significant changes over…
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Earth
Earth’s biggest mass extinction event 250 million years ago shows what can happen when El Niño gets out of control
Credit: Pixabay/CC0 Public Domain About 252 million years ago, the Earth suddenly warmed. Over a geologically short period of a few tens of thousands of years, 90% of species became extinct. Even insects, which are rarely affected by such events, suffered devastating losses. The Permian-Triassic mass extinction was the largest of the “Big Five” mass extinctions in Earth’s history. Scientists…
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Space & Cosmos
Earth may have had rings 466 million years ago
Regions of equatorial continental crust during the Ordovician Period. Regions older than Ordovician are shown in salmon, Ordovician rocks in dark blue, and newer regions in grey. Light blue indicates lakes in Europe and Russia. Labeled pink dots are recognized as Ordovician impact craters. Credit: Earth and Planetary Science Letters (2024). DOI: 10.1016/j.epsl.2024.118991 In a discovery that calls into question…
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