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ScienceDaily: Fossils & Ruins News |
| A new giant dinosaur gives insight into why many prehistoric meat-eaters had such tiny arms Posted: 07 Jul 2022 11:18 AM PDT An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds. |
| Posted: 07 Jul 2022 11:17 AM PDT In a new paper, researchers challenge the longstanding view that the force of natural selection in humans must decline to zero once reproduction is complete. They assert that a long post-reproductive lifespan is not just due to recent advancements in health and medicine. The secret to our success? Our grandparents. |
| Citizen scientists from 200 years ago and today help shed light on climate change trends Posted: 06 Jul 2022 12:31 PM PDT Citizen science observations across two centuries reveal a dramatic, climate-driven shift to earlier leaf out and flowering, which varies across settings, species and functional groups. Plants in urban areas, insect pollinated trees, and early-season species show the greatest rate of advancement overall. This unprecedented comparison of historic-modern network observations illustrates how long-term monitoring and citizen science efforts are invaluable for ecological forecasting and discovery. |
| Arctic temperatures are increasing four times faster than global warming Posted: 05 Jul 2022 01:21 PM PDT A new analysis of observed temperatures shows the Arctic is heating up more than four times faster than the rate of global warming. The trend has stepped upward steeply twice in the last 50 years, a finding missed by all but four of 39 climate models. |
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