Ancient human footprints found in New Mexico’s White Sands National Park tell an intimate story about what life was like during the Ice Age–and reveal surprising new evidence about when humans arrived in North America. 🧵⬇️
NOVA | PBS
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NOVA | PBS
@novapbs
Official account for the PBS documentary series demystifying the science and tech that shape our lives, our planet, and our universe. Streaming on the PBS app.
Joined November 2008
- How do you keep microbes from Earth from contaminating Mars? This NASA scientist, who worked on the Perseverance mission, explains: #CountdowntoMars #Mars2020
00:00 - Scientists dated the ancient human footprints found at White Sands National Park using long-buried seeds. The technique, called radiocarbon dating, showed that the footprints were created between 21,000 and 23,000 years ago. to.pbs.org/3H5R4TY
00:00 - Replying to @novapbsThe footprints suggest that humans were in North America as long as 23,000 years ago—long before previous estimates of 16,000 years.
- The fanged, cat-sized deer relative—also known as the Vietnam mouse-deer—was last spotted in 1990, when researchers acquired a dead specimen from a hunter.
- Can psychedelics heal the mind? Early research suggests that psychedelic-assisted therapy may help people recover from depression, addiction, PTSD, and more.🧵
- Having the potential to send not a handful of astronauts to the Moon or Mars, but dozens and then hundreds, "Starship represents a radical departure for NASA and human exploration." via @arstechnica
- At the height of the last Ice Age, ancient humans may have already been in North America–a new discovery that shows humans may have once crossed paths with now-extinct beasts like enormous mammoths and giant ground sloths. to.pbs.org/3H62FCs
GIF - NASA's James Webb Space Telescope is about to begin its million-mile journey. Here's what to expect from the largest, most technologically advanced, and most expensive space telescope ever created.
00:00 - Indigenous peoples have long believed their ancestors were in America earlier than scientists thought. “Now we have the evidence,” says Joe Watkins, archaeologist and member of the Choctaw Nation. “It [puts] our footprints firmly into the past here.” bit.ly/3yYItjT
- Stream “Rise of the Mammals,” timed to @ScienceMagazine’s announcement of @DenverMuseumNS’s discovery of life on Earth after the #asteroid, on @PBS NOW: to.pbs.org/2W91tH5 A NOVA production by @TangledBankHHMI for @wgbh #RiseoftheMammalsPBS
00:00 - No link w/ autism—not to mercury, thimerosal, or any vaccines—has been found. to.pbs.org/1CTSKsZ #vaccinesNOVA
- Replying to @novapbsSome psychedelics may actually change the way brain regions talk to each other. “It’s like reprogramming the operating system of a computer. You’re getting down to very basic, code-level changes,” says Dr. Roland Griffiths.
- NASA's Cassini explored Saturn and its rings, storms, and moons for 13 years. Here are the spacecraft's final moments. Tune in or stream "The Planets: Saturn" tomorrow night at 9/8c on @PBS: to.pbs.org/2TkifBL
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