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These Ancient Stones Helped Track the Seasons
2:57
Mysterious stone arrangements reveal Senegal’s ancient connections to astronomy.
Sharks Are Showing Up Earlier—and Staying Longer
4:18
Tiger sharks are showing up off the coast of New England earlier. What’s going on?
Oldest DNA Ever Found Reveals Secrets of the Ancient Arctic
4:03
Researchers drilled in the Kap København formation in Greenland to collect soil samples.
LIDAR Technology Helps Uncover a Maya Metropolis
3:09
Light Detection and Ranging, LIDAR, sees through the jungle to reveal what lies beneath.
Animal-to-Human Organ Transplants
4:59
In a first, a 57-year-old man received a heart transplant from a genetically modified pig.
Increasing Access to Brain-Controlled Prosthetics
2:55
Bionic interventions might allow people to one day design their own limbs.
How Neanderthals Came to Inhabit Northwest Europe
2:45
Stone tools reveal that four species of human have occupied Britain.
Why Wombats Poop Cubes
3:00
Biologists and engineers solve a major marsupial mystery.
Humans May Have Lived in North America Earlier Than Thought
4:16
Scattered seeds help reveal when ancient humans first left footprints in North America.
The False Promise of Cloning Your Pet
6:37
Cloning has come a long way since Dolly the sheep, but it still has limits.
Watch the DART Spacecraft Smash into an Asteroid
0:51
Could we deflect an asteroid barreling toward Earth? DART offers a first test.
How Storm Surges Work—and Why They’re So Deadly
4:49
The deadliest part of a hurricane isn’t the wind–it’s water.
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