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ScienceDaily: Fossils & Ruins News |
| Air bubbles in Antarctic ice point to cause of oxygen decline Posted: 20 Dec 2021 04:06 PM PST An unknown culprit has been removing oxygen from our atmosphere for at least 800,000 years, and an analysis of air bubbles preserved in Antarctic ice for up to 1.5 million years has revealed the likely suspect. |
| Ostrich eggshell beads reveal 50,000-year-old social network across Africa Posted: 20 Dec 2021 09:06 AM PST New archeological study shows ancient connection between populations 3,000 km apart, and provides first direct link between climate change and ancient human social behavior. |
| Abundance of life discovered beneath an Antarctic ice shelf Posted: 20 Dec 2021 09:00 AM PST Far beneath the ice shelves of the Antarctic, there is more marine life than expected. |
| Himalayan glaciers melting at 'exceptional rate' Posted: 20 Dec 2021 05:31 AM PST The accelerating melting of the Himalayan glaciers threatens the water supply of millions of people in Asia, new research warns. The study concludes that over recent decades the Himalayan glaciers have lost ice ten times more quickly over the last few decades than on average since the last major glacier expansion 400-700 years ago, a period known as the Little Ice Age. |
| Deadliest period in Earth’s history was also the stinkiest Posted: 20 Dec 2021 05:30 AM PST Tiny microbes belching toxic gas helped cause -- and prolong -- the biggest mass extinction in Earth's history, a new study suggests. |
| Discovering sources of Roman silver coinage from the Iberian Peninsula Posted: 17 Dec 2021 09:38 AM PST Despite its prior status as a luxury commodity, silver became widely used for coinage in the Roman world from the 7th century BCE onward and provided a standardized monetary system for ancient Mediterranean civilizations. However, the sources of silver used to produce Roman coinage have largely been used up, making it difficult to determine which deposits Roman miners exploited. |
| Sauropod dinosaurs were restricted to warmer regions of Earth Posted: 17 Dec 2021 09:38 AM PST A study investigated the enigma of why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions. |
| Maples in the mountains provide clues to past distribution Posted: 16 Dec 2021 11:45 AM PST Researchers have investigated the genetic structure of the relic species, Acer miyabei, from three regions in Japan: Hokkaido Island and two southern groups in Northern and Central Honshu. There was significant genetic differentiation among the regions, with the northern group separated from the southern groups. Populations in the mountains of Central Honshu showed a high proportion of distinct alleles and the mountainous terrain in this area likely contributed to this genetic differentiation. |
| Extinct megafauna prone to ancient 'hunger games' Posted: 14 Dec 2021 12:21 PM PST Different combinations of human hunting and climate change caused Australia's famed 'giant' species to go extinct, and now it turns out that for some species, changing food availability made things worse. |
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