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ScienceDaily: Fossils & Ruins News |
| Uncovering the underlying patterns in contemporary evolution Posted: 19 Jan 2022 10:50 AM PST Wild populations must continuously adapt to environmental changes or risk extinction. For more than fifty years, scientists have described instances of 'rapid evolution' in specific populations as their traits (phenotypes) change in response to varying stressors. For example, Spanish clover has developed a tolerance for copper from the mine tailings in which it grows, and the horn size of Alberta bighorn sheep has decreased due to trophy hunting. But until now it hasn't been possible to reach any overarching conclusions about how different factors (such as harvesting, climate change, invasive species, or pollution) shape this rapid (now called 'contemporary') evolution. |
| Muscular study provides new information about how the largest dinosaurs moved and evolved Posted: 19 Jan 2022 09:13 AM PST New research has revealed how giant 50-ton sauropod dinosaurs, like Diplodocus, evolved from much smaller ancestors, like the wolf-sized Thecodontosaurus. |
| Why did ocean productivity decline abruptly 4.6 million years ago? Posted: 18 Jan 2022 09:51 AM PST By drilling deep down into sediments on the ocean floor researchers can travel back in time. A research team now presents new clues as to when and why a period often referred to as the 'biogenic bloom' came to an abrupt end. Changes in the shape of the Earth's orbit around the Sun may have played a part in the dramatic change. |
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