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ScienceDaily: Fossils & Ruins News |
| Global warming threatens the existence of an Arctic oasis Posted: 03 Sep 2021 10:26 AM PDT The most significant Arctic oasis is susceptible to climate change -- researchers say that global warming is threatening the region's ecosystem, and predict that the oasis will cease to exist. |
| The first cells might have used temperature to divide Posted: 03 Sep 2021 10:25 AM PDT A simple mechanism could underlie the growth and self-replication of protocells -- putative ancestors of modern living cells -- suggests a new study. Protocells are vesicles bounded by a membrane bilayer and are potentially similar to the first unicellular common ancestor (FUCA). On the basis of relatively simple mathematical principles, the proposed model suggests that the main force driving protocell growth and reproduction is the temperature difference that occurs between the inside and outside of the cylindrical protocell as a result of inner chemical activity. |
| Wing shape determines how far birds disperse Posted: 02 Sep 2021 02:46 PM PDT Bird dispersal movements are thought to depend on complex demographic and genetic factors. Researchers show that there may be a simpler explanation: bird dispersal distances depend on the morphology and flight efficiency of the wings. Bird populations and the capacity of species to move across the landscape can determine which species will thrive and which may become endangered. |
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