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ScienceDaily: Fossils & Ruins News |
| Was North America populated by 'stepping stone' migration across Bering Sea? Posted: 29 Apr 2021 08:24 AM PDT A new study may answer 'one of the greatest mysteries of our time . . . when humans made the first bold journey to the Americas.' |
| Methane release rapidly increases in the wake of the melting ice sheets Posted: 29 Apr 2021 07:49 AM PDT Melting of the Arctic ice sheets caused rapid methane release from the ocean floor during the last two deglaciations, according to a new study. A similar release is likely to happen today, and should be included in climate models, say the scientists. |
| Molecular biologists travel back in time 3 billion years Posted: 29 Apr 2021 07:49 AM PDT A research group has succeeded in studying 'translation factors' - important components of a cell's protein synthesis machinery - that are several billion years old. By studying these ancient 'resurrected' factors, the researchers were able to establish that they had much broader specificities than their present-day, more specialized counterparts. |
| Time for a mass extinction metrics makeover Posted: 29 Apr 2021 07:49 AM PDT Researchers say the scientific community sorely needs a new way to compare the cascading effects of ecosystem loss due to human-induced environmental change to major crises of the past. |
| Global glacier retreat has accelerated Posted: 29 Apr 2021 06:51 AM PDT Scientists have shown that almost all the world's glaciers are becoming thinner and losing mass - and that these changes are picking up pace. The team's analysis is the most comprehensive and accurate of its kind to date. |
| Mammals evolved big brains after big disasters Posted: 29 Apr 2021 06:02 AM PDT A large study reveals the way relative brain size of mammals changed over the last 150 million years. |
| Social tensions preceded disruptions in ancient Pueblo societies Posted: 26 Apr 2021 12:48 PM PDT Drought is often blamed for the periodic disruptions of ancient Pueblo societies of the U.S. Southwest, but in a study with potential implications for the modern world, archaeologists found evidence that slowly accumulating social tension likely played a substantial role in three dramatic upheavals in Pueblo development. The findings show that Pueblo farmers often persevered through droughts, but when social tensions were increasing, even modest droughts could spell the end of an era of development. |
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