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Evolution in casting a longer shadow than previously thought, scientists report in a new paper published the week of Aug. Proceedings of the National Academy of Sciences . Smithsonian scientists and colleagues looked at eelgrass communities—the basis of many coastal marine food webs along the north Atlantic and Pacific coasts—and found that their ancient genetic history can play a more powerful role than the current environment in determining their size, structure, and who they are. live in it. And this could have implications for how well eelgrass adapts to threats like climate change. About half a million years ago, when the world was warmer, some eelgrass plants made the arduous journey from their homes in the Pacific to the Atlantic. Not all plants are hardy enough to travel across the North Pole. For those who succeeded, a series of ice ages during the Pleistocene Epoch further influenced how far they could spread. That millennial struggle left a lasting imprint in their DNA

Depiction of Earth, first without an inner core; second, with a growing inner core, about 550 million years ago; third, with the outermost and innermost core, about 450 million years ago. University of Rochester researchers used paleomagnetism to determine these two important dates in the history of the inner core, which they believe restored the planet’s magnetic field just before the explosion of life on Earth. Credit: University of Rochester Illustration / Michael Osadciw New paleomagnetic research shows Earth’s dense core formed 550 million years ago and restored our planet’s magnetic field. The rotating molten iron in Earth’s outer core, which lies about 1,800 miles below our feet, produces our planet’s protective magnetic field, called the magnetosphere. Although this magnetic field is invisible, it is essential for life on Earth’s surface. That’s because the magnetosphere protects the planet from the solar wind—the stream of radiation from the sun. However, about 565 milli

Over the past 10 years, researchers led by FU Qiaomei of the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences (CAS) have used ancient DNA (aDNA) technology to explore the history of ancient human populations, especially those in East Asia. . As part of their effort, the researchers reconstructed the entire genomes of two extinct groups of ancient humans—Neanderthals and Denisovans; map the history of migration and global population interactions; uncover the genetic structure of the oldest East Asian people; reveal adaptive genetic changes in East Asian Ice Age populations; and traces the formation of population patterns in northern and southern China and the origins of Austronesian populations in southern China. Recently, the FU team reviewed the development history of aDNA technology, discussed current technical barriers and solutions, and assessed the future of the technology. The study was published in Cell on July 21. The main

For more than a century, evolutionary biologists assumed that the specimen found in South Australia was that of the mighty grave eagle (Taphaetus lacertosus). Nevertheless, a new study has announced a true classification system: it is a vulture, and it is a first in the country. Ancient Vulture Fossil The predatory vulture Cryptogyps lacertosus, meaning powerful hidden vulture, existed between 500 and 50,000 years ago, according to fossils. This is an ‘Old World’ eagle, and a comparable species may still be seen today – but not in Australia, according to Science Alert. The categorization shows how the diversity of megafauna as well as various species existed on this part of the planet throughout the Pleistocene epoch, which lasted about 2.5 million years and ended about 11,700 years ago. Meanwhile, according to Flinders University paleontologist Ellen Mather’s interview with The Guardian, researchers examined archaeological evidence of flying birds from around the world, and then it