Skyler Ware is a freelance science journalist covering chemistry, biology, paleontology and Earth science. She was a 2023 AAAS Mass Media Science and Engineering Fellow at Science News. Her work has also appeared in Science News Explores, ZME Science and Chembites, among others. Skyler has a Ph.D. in chemistry from Caltech.
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World's oldest rock art, giant reservoir found beneath the East Coast seafloor, black hole revelations, and a record solar radiation storm'They are life, but not as we now know it': 26-foot organism that lived 420 million years ago is completely unknown branch of animal kingdom1.5 million-year-old Homo erectus face was just reconstructed — and its mix of old and new traits is complicating the picture of human evolution'An extreme end of human genetic variation': Ancient humans were isolated in southern Africa for nearly 100,000 years, and their genetics are stunningly differentFirst of its kind 'butt drag fossil' discovered in South Africa — and it was left by a fuzzy elephant relative 126,000 years ago New species may have evolved surprisingly quickly after the asteroid impact that wiped out the nonavian dinosaurs, researchers have found., which occurred about 66 million years ago, adding to an ongoing debate over how quickly new species arose in the wake of the collision. This suggests life rebounded much faster than scientists previously thought, researchers report in a study published Jan. 21 in the journal."This research helps us understand just how quickly new species can evolve after extreme events and also how quickly the environment began to recover after the Chicxulub impact."Rock climbers in Italy accidentally discovered evidence of an 80 million-year-old sea turtle stampedeAfter the roughly 7.5-mile-wide asteroid struck off the coast of the Yucatán Peninsula in the Gulf of Mexico, dust and soot from the impact temporarily blocked out the sun. Cold, dark conditions lasted Based on estimates of how quickly sediment accumulated in the ocean and when fossils of new plankton species, such as , started to appear, many experts think it took about 30,000 years for the first new species to show up. But that estimate assumes that ocean sediments built up at a constant rate over that time period. Although that's often the case in ocean environments, it wasn't necessarily true after the Chicxulub impact. In the new study, the researchers turned to a different marker: helium-3. This isotope falls to Earth with interplanetary dust at a constant rate. By measuring the helium-3 throughout a sediment layer, scientists can tell how long it took that layer to build up. For the study, the researchers used previously collected helium-3 measurements from six sites to calculate when new fossil species arrived.Get the world’s most fascinating discoveries delivered straight to your inbox.Receive email from us on behalf of our trusted partners or sponsorsappeared an average of 6,400 years after the impact across those six sites, the team found. At some sites, the new calibration suggests that other species likely emerged even sooner, less than 2,000 years after the asteroid struck. Between 10 and 20 species of plankton appeared within about 11,000 years, though there's still some debate over which fossils count as separate species, according to the study., a geoscientist at Penn State, said in the statement."To have complex life reestablished within a geologic heartbeat is truly astounding."That recovery may help give scientists a sense of how quickly new species could arise in response to human influence."It's also possibly reassuring for the resiliency of modern species given the threat of anthropogenic habitat destruction," Bralower added.Lowery, C. M., Bralower, T. J., Farley, K., & Leckie, R. M. . New species evolved within a few thousand years of the Chicxulub Impact. Skyler Ware is a freelance science journalist covering chemistry, biology, paleontology and Earth science. She was a 2023 AAAS Mass Media Science and Engineering Fellow at Science News. Her work has also appeared in Science News Explores, ZME Science and Chembites, among others. Skyler has a Ph.D. in chemistry from Caltech.'Part of the evolutionary fabric of our societies': Same-sex sexual behavior in primates may be a survival strategy, study finds
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'Previously unimaginable': James Webb telescope breaks own record again, discovering farthest known galaxy in the universeSkyler Ware is a freelance science journalist covering chemistry, biology, paleontology and Earth science. She was a 2023 AAAS Mass Media Science and Engineering Fellow at Science News. Her work has also appeared in Science News Explores, ZME Science and Chembites, among others. Skyler has a Ph.D. in chemistry from Caltech.
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