Debate settled? Oldest human footprints in North America really are 23,000 years old, study finds

日本 ニュース ニュース

Debate settled? Oldest human footprints in North America really are 23,000 years old, study finds
日本 最新ニュース,日本 見出し
  • 📰 LiveScience
  • ⏱ Reading Time:
  • 43 sec. here
  • 2 min. at publisher
  • 📊 Quality Score:
  • News: 20%
  • Publisher: 51%

Laura is the archaeology and Life's Little Mysteries editor at Live Science. She also reports on general science, including paleontology. Her work has appeared in The New York Times, Scholastic, Popular Science and Spectrum, a site on autism research. She has won multiple awards from the Society of Professional Journalists and the Washington Newspaper Publishers Association for her reporting at a weekly newspaper near Seattle. Laura holds a bachelor's degree in English literature and psychology from Washington University in St. Louis and a master's degree in science writing from NYU.

Paleo-human footprints dotting White Sands National Park in New Mexico are 23,000 to 21,000 years old, making them the oldest known fossilized trackways left by people in North America, a new study finds. However, not everyone agrees with the results.

The White Sands trackway is now the oldest site in North America with direct evidence of humans and it significantly pushes back the arrival date of the first Americans."When the first paper came out, a lot of archaeologists reached out and told us, 'It was just a matter of time. We knew that people were here earlier,'" said Jeffrey Pigati, who co-lead the study with Kathleen Springer. Both are U.S.

In the rebuttal, Davis and his colleagues suggested the White Sands group use optically stimulated luminescence dating, a technique that estimates how much time has passed since quartz or feldspar grains were last exposed to intense heat or sunlight.The team examined quartz grains under the footprints with OSL dating. They found that the layers with the footprints had a minimum age of about 21,500 years old.

このニュースをすぐに読めるように要約しました。ニュースに興味がある場合は、ここで全文を読むことができます。 続きを読む:

LiveScience /  🏆 538. in US

日本 最新ニュース, 日本 見出し

Similar News:他のニュース ソースから収集した、これに似たニュース記事を読むこともできます。

Claire Maldarelli ArchivesClaire Maldarelli Archiveswas the Science Editor at Popular Science. She has a particular interest in brain science, the microbiome, and human physiology. In addition to Popular Science, her work has appeared in The New York Times, Scientific American, and Scholastic’s Science World and Super Science magazines, among others. She has a bachelor’s degree in neurobiology from the University of California, Davis and a master’s in science journalism from New York University's Science, Health, and Environmental Reporting Program.
続きを読む »

DARPA wants to modernize how first responders do triage during disastersDARPA wants to modernize how first responders do triage during disastersSarah Scoles is a freelance science journalist and regular Popular Science contributor, who’s been writing for the publication since 2014. She covers the ways that science and technology interact with societal, corporate, and national security interests. The author of the books Making Contact, They Are Already Here, Astronomical Mindfulness, and the forthcoming Mass Defect, she lives in Denver and escapes to the mountains to search for abandoned mines and ghost towns as often as she can.\n
続きを読む »

'Remarkably symmetrical' star explosions could reveal the true expansion rate of the universe'Remarkably symmetrical' star explosions could reveal the true expansion rate of the universeRobert Lea is a science journalist in the U.K. who specializes in science, space, physics, astronomy, astrophysics, cosmology, quantum mechanics and technology. Rob's articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University\n
続きを読む »

Highest-energy pulsar ever seen could indicate new physicsHighest-energy pulsar ever seen could indicate new physicsRobert Lea is a science journalist in the U.K. who specializes in science, space, physics, astronomy, astrophysics, cosmology, quantum mechanics and technology. Rob's articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University\n
続きを読む »

David Beckham Tells Victoria Beckham to 'Be Honest' After She Claims She Grew Up 'Working Class'David Beckham Tells Victoria Beckham to 'Be Honest' After She Claims She Grew Up 'Working Class'In a new clip from Netflix's new 'Beckham' docuseries, David Beckham interrupts his wife Victoria's interview to question her after she says she grew up 'working class.'
続きを読む »

Novavax's new COVID vaccine cleared for use by FDANovavax's new COVID vaccine cleared for use by FDANicoletta Lanese is the health channel editor at Live Science and was previously a news editor and staff writer at the site. She holds a graduate certificate in science communication from UC Santa Cruz and degrees in neuroscience and dance from the University of Florida. Her work has appeared in The Scientist, Science News, the Mercury News, Mongabay and Stanford Medicine Magazine, among other outlets. Based in NYC, she also remains heavily involved in dance and performs in local choreographers' work.
続きを読む »



Render Time: 2025-02-28 02:19:02