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ScienceDaily: Fossils & Ruins News |
| Did Earth's early rise in oxygen help multicellular life evolve? Posted: 18 May 2021 05:54 PM PDT Researchers find that oxygenation of Earth's surface is key to the evolution of large, complex multicellular organisms. If cells can access oxygen, they get a big metabolic benefit. However, when oxygen is scarce, it can't diffuse very far into organisms, so there is an evolutionary incentive for multicellular organisms to be small to ensure most of their cells can still access oxygen. |
| Ancient horse DNA reveals gene flow between Eurasian and North American horses Posted: 18 May 2021 10:08 AM PDT A new study of ancient DNA from horse fossils found in North America and Eurasia shows that horse populations on the two continents remained connected through the Bering Land Bridge, moving back and forth and interbreeding multiple times over hundreds of thousands of years. |
| Colonization of the Antilles by South American fauna: Giant sunken islands as a passageway Posted: 18 May 2021 08:42 AM PDT Fossils of land animals from South America have been found in the Antilles, but how did these animals get there? According to scientists from the CNRS, l'Université des Antilles, l'Université de Montpellier and d'Université Côte d'Azur, land emerged in this region and then disappeared beneath the waves for millions of years, explaining how some species were able to migrate to the Antilles. This study will be published in June 2021 issue in Earth-Science Reviews. |
| Mammals in the time of dinosaurs held each other back Posted: 17 May 2021 09:49 AM PDT Scientists discover that dinosaurs were not the main competition for mammals during the time of the dinosaurs, challenging previously held ideas about evolution. |
| Scientists explore Tesla roads not taken -- and find new potential present-day utility Posted: 17 May 2021 05:36 AM PDT A valve invented by engineer Nikola Tesla a century ago is not only more functional than previously realized, but also has other potential applications today, a team of researchers has found after conducting a series of experiments on replications of the early 20th-century design. |
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