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ScienceDaily: Fossils & Ruins News |
| Scientists find new indicators of Alaska permafrost thawing Posted: 07 Jun 2022 09:10 AM PDT More areas of year-round unfrozen ground have begun dotting Interior and Northwest Alaska and will continue to increase in extent due to climate change, according to new research. |
| Earth's magnetic poles not likely to flip anytime soon Posted: 07 Jun 2022 09:09 AM PDT The emergence of a mysterious area in the South Atlantic where the geomagnetic field strength is decreasing rapidly, has led to speculation that Earth is heading towards a magnetic polarity reversal. However, a new study that pieces together evidence stretching back 9,000 years, suggests that the current changes aren't unique, and that a reversal may not be in the cards after all. |
| How species form: What the tangled history of polar bear and brown bear relations tells us Posted: 06 Jun 2022 03:12 PM PDT A new study is providing an enhanced look at the intertwined evolutionary histories of polar bears and brown bears. Becoming separate species did not completely stop these animals from mating with each other. Scientists have known this for some time, but the new research draws on an expanded dataset -- including DNA from an ancient polar bear tooth -- to tease out more detail. |
| New evidence about when, where, and how chickens were domesticated Posted: 06 Jun 2022 03:11 PM PDT New research transforms our understanding of the circumstances and timing of the domestication of chickens, their spread across Asia into the west, and reveals the changing way in which they were perceived in societies over the past 3,500 years. |
| Study explores the promises and pitfalls of evolutionary genomics Posted: 06 Jun 2022 11:54 AM PDT A new study examines mathematical models designed to draw inferences about how evolution operates at the level of populations of organisms. The study concludes that such models must be constructed with the greatest care, avoiding unwarranted initial assumptions, weighing the quality of existing knowledge and remaining open to alternate explanations. |
| New study deepens understanding of how animals see, and what colors Posted: 06 Jun 2022 11:54 AM PDT Gathering vision data for hundreds of vertebrates and invertebrates, biologists have deepened scientists' understanding of animal vision, including the colors they see. The researchers determined that animals adapted to land are able to see more colors than animals adapted to water. Animals adapted to open terrestrial habitats see a wider range of colors than animals adapted to forests. |
| Breakthrough study examines evolution of snake venom genes Posted: 06 Jun 2022 10:44 AM PDT A new study provides the first comprehensive explanation of how snake venom regulatory systems evolved -- an important example that illuminates the evolution of new complex traits. |
| Posted: 06 Jun 2022 08:15 AM PDT Over 200 years ago, a Spanish botanist described Artocarpus odoratissimus, a species of fruit-bearing tree found in Borneo and the Philippines. The Iban people, who are Indigenous to Borneo, know the tree to have two different varieties, which they call lumok and pingan, distinguished by their fruit size and shape. Despite this knowledge, Western botanists have long considered the tree as a single species, but a genetic analysis confirms the Iban people were right all along. |
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