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.
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. 🧵⬇️
How do you keep microbes from Earth from contaminating Mars? This NASA scientist, who worked on the Perseverance mission, explains:
#CountdowntoMars
#Mars2020
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.
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.
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.”
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.
Some 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
:
One theory is that a brain region called the claustrum acts like a switchboard in the brain, possibly explaining why psychedelics can help reset rigid behaviors and thought patterns.
Here’s how it works:
Bill Anders was looking for a spot to land on the moon when he saw the Earth appear over the horizon. Many consider the resulting photo, “Earthrise,” to be one of the most important photos of the 20th century.
Here's why: via
@newscientist
Here's what to expect from
@NASAWebb
, the largest, most technologically advanced, and most expensive space telescope ever built.
"Ultimate Space Telescope" premieres WED JULY 13 at 9/8c on PBS:
BREAKING: California’s
@xercessociety
for Invertebrate Conservation announced today that volunteers counted nearly 250,000 Western monarchs in California in 2021. Ecologists weigh in on the news.
Meet the charismatic slime mold Physarum, which can learn, make decisions, and go through mazes without a brain, and the researchers studying it.
Tune in or stream "Secret Mind of Slime" tonight at 9/8c on
@PBS
:
Strange particles observed by an experiment in Antarctica could be evidence of an alternative reality where everything is upside down,
@newscientist
reports:
In a mirror universe, time may run backward from the Big Bang:
This visualization uses Washington D.C.'s National Mall to show the scale of human coal consumption—and how much CO2 it adds to our atmosphere.
Stream "Can We Cool the Planet?" online or on the
@PBS
Video app now:
Neutrinos could help unlock one of the biggest mysteries in physics today. See how scientists in Antarctica are catching these particles from billions of light-years away:
The idea that psychedelics can heal isn’t new. Indigenous peoples around the world have used plant-based psychedelics for thousands of years.
“To me, peyote is a very intimate, medicinal herb.” - Adrian Primeaux, Yankton Sioux Tribe
Kizzmekia Corbett (
@KizzyPhD
), a viral immunologist at the National Institutes of Health, discusses the search for a COVID-19 vaccine and the vital role RNA plays in the process.
#BlackInImmunoWeek
See the world through the eyes of nature’s fastest animal—the peregrine falcon.
"World's Fastest Animal" premieres on Wednesday, Nov. 21 at 9/8c on
@PBS
:
Black holes are mind-blowing. Discover the FOUR types of black holes that exist in the cosmos. | Don't miss "Black Hole Apocalypse," airing this Wednesday, January 10 at 9/8c on
@PBS
:
Christian Cooper, board member of the New York City Audubon, hands out yearbook-style superlatives to numerous bird species and shares some of his memorable birding encounters.
Fossilized feces remains indicate that herbivorous dinosaurs living in the North may have eaten rotten wood—and the insects living in it—to survive winter.
“When I was young, I thought it was all about tedious computations," mathematician Rebecca Goldin said. "In contrast, math is playful, colorful, and conceptual.” via
@scifri
A vaccine developed by the University of Oxford appears safe and caused individuals to make both coronavirus-fighting antibodies and T-cells. Now, larger trials are under way. via
@BBCNews
We can now edit the human genome with a tool called CRISPR. But how far should we go?
Tune in or stream "Human Nature" on Wednesday, Sept. 9 at 8/7c on
@PBS
:
Physicists at the Laboratory for Underground Nuclear Astrophysics in Italy have re-created a nuclear reaction that happened between two and three minutes after the Big Bang. via
@WIRED
Physicists have long known that the universe is made from two kinds of particles: fermions and bosons. Now, they've discovered the first examples of a third particle kingdom.
via
@QuantaMagazine
New research shows that sharks use the Earth's magnetic field to navigate the seas.
Read how some birds may use quantum entanglement to "read" Earth's magnetic field during their harrowing migrations (from 2019):
What has
@NASA
’s James Webb Space Telescope revealed so far?
Discover what scientists are learning about some of astronomy’s biggest questions.
“New Eye on the Universe” airs Wednesday Feb 22 on
@PBS
.
"There's been too much focus on the number of tests, and not enough focus on whether they're being done in the right way, on the right people, with the right actions taken when they come back," former CDC head Dr. Tom Frieden says. via
@NewsHour
Brandon Taylor's success story as a writer "underscores what science lost when Brandon walked away from a graduate biochemistry program in 2016." via
@NPR
“If I could show that the climate problem was wrong, it would be fantastic. I would become the most famous scientist in the world…That’s just the way science works: Conspiracy is impossible.” —ecologist Stephen Pacala
#WeatherMachinePBS
The last remaining master animal-skin parchment maker in the world demonstrates how paper was made in medieval Europe (and why it wasn’t for vegetarians).
Stream "A to Z: How Writing Changed the World" to learn more:
Thousands of ancient footprints stretch for miles across New Mexico's White Sands National Park, revealing surprising new evidence about early humans and the extinct giant beasts of the Ice Age.
"Ice Age Footprints" premieres WED MAY 25 at 9/8c on
@PBS
:
"He was a great scientist and an extraordinary man whose work and legacy will live on for many years," wrote Stephen Hawking's children. "His courage and persistence with his brilliance and humor inspired people across the world." via
@guardian
Widespread discrimination against women in science exists. Chemist
@DrRubidium
discusses the additional challenges for those with intersectional identities.
Tune in or stream "Picture a Scientist" tonight at 9/8c on
@PBS
to learn more:
Many consider “Earthrise,” taken by astronaut Bill Anders, to be one of the most important photos of the 20th century.
Wishing everyone a wonderful Earth Day! How will you be celebrating?
NASA’s DART mission is 'on track for an impact' with an asteroid 7 million miles away from Earth,
@SPACEdotcom
reports:
If all goes according to plan, the DART spacecraft will make contact this Monday. Learn more about the mission:
We can now edit the human genome with a tool called CRISPR. But how far should we go?
Tune in or stream NOVA's feature film "Human Nature" on Wednesday, Sept. 9 at 9/8c on
@PBS
to find out:
Deep in the desert, a massive fossil unlocks what life was like over 40 million years ago—when the prehistoric whale could walk. Follow scientists as they unearth clues about whales' evolutionary past.
Join us for “When Whales Could Walk” NOW on YouTube:
Researchers expose longstanding discrimination against women in science.
Tune in or stream "Picture a Scientist" on Wednesday, April 14 at 9/8c on
@PBS
:
Astronaut Mark Kelly (who you may recognize from NASA’s trailblazing Twins Study) won the election by a margin of 52.63 percent and could possibly take office as soon as the end of the month. via
@SPACEdotcom
That means humans were here at the height of the last Ice Age, a time when now-extinct beasts roamed the continent.
The footprints show that humans may have crossed paths with enormous mammoths and giant ground sloths.
NASA Goddard researcher
@EarthToLola
shoots lasers at trees in order to measure how much carbon forests store.
Stream "Can We Cool the Planet?" online or on the
@PBS
Video app to learn more:
Striking new fossils paint a picture of life right before the asteroid impact.
"Dinosaur Apocalypse: The New Evidence," hour one of a two-hour special, premieres on WED MAY 11 at 9/8c on
@PBS
:
The James Webb Space Telescope released its first full-color images this week, peering deeper into the universe than ever before.
But what did it take to get there?
Learn how
@NASAWebb
engineers built the most complex machine ever launched into space🧵
We can now edit the human genome with a tool called CRISPR. But how far should we go?
Tune in or stream "Human Nature" tomorrow night (9/9) at 8/7c on
@PBS
to learn more:
For the first time, two intrepid pilots fly a solar-powered airplane around the world. Don't miss "The Impossible Flight," premiering January 31, 2018 at 9/8c on
@PBS
:
Birds do it. Dolphins do it. Even educated seals do it. A recent study shows seals can copy vowel noises and match melodies, mimicking human speech perhaps better than any other mammal. (from 2019)