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A Cold War nuclear bunker is buried deep inside a Colorado mountain. See inside the Cheyenne Mountain Complex.

8 hours ago

A 14-year-old won $25,000 for origami. He discovered a pattern that can hold 10,000 times its own weight, he says.

12 hours ago

Russia's only way to send astronauts to space has suffered some serious blast damage

18 hours ago

Tech CEOs can't stop talking about data centers in space

22 hours ago

Why building a mile-high skyscraper is almost impossible

4 days ago

5 LONG-LOST CITIES THAT WERE BURIED FOR CENTURIES — AND THE SURPRISING WAYS THEY WERE REDISCOVERED

8 days ago

Who is Jared Isaacman, the billionaire SpaceX astronaut who Trump re-nominated to lead NASA

21 days ago

15 BIZARRE CREATURES FROM THE BOTTOM OF THE OCEAN THAT LOOK LIKE ALIENS

6 months ago

A fire has been burning under this Pennsylvania ghost town for more than 60 years — take a look

22 days ago

10 MYSTERIES IN NATURE THAT SCIENTISTS CAN'T FULLY EXPLAIN

30 days ago

Bill Gates is pushing back against the 'doomsday outlook' on climate change

1 month ago

Lab spaces were the hottest commercial real estate bet. Now, landlords are facing headwinds from DC and Silicon Valley.

1 month ago

Elon Musk calls Trump official a 'dummy' amid spat over NASA leadership

1 month ago

NASA acting administrator says SpaceX is 'behind schedule' on moon-landing contract, so he's reopening it

1 month ago

16 THINGS YOU SHOULDN'T RECYCLE — EVEN IF YOU THINK YOU CAN

1 month ago

What life is like in the world's northernmost town, where it's dark for 4 months a year and polar bears roam free

1 month ago

Photos show life in the world's northernmost town, where it's dark for 4 months a year and polar bears roam free

1 month ago

20 MIND-BOGGLING OPTICAL ILLUSIONS YOU CAN FIND IN NATURE

1 month ago

Jane Goodall, chimpanzee researcher and conservationist, is dead at 91

1 month ago

10 LANDMARKS YOU CAN SEE FROM SPACE

2 months ago

Photos show what life is like on the International Space Station, from sleeping arrangements to haircuts

2 months ago

The Titanic wreckage was found 40 years ago during a secret US Navy mission to recover nuclear submarines

2 months ago

He knew Greenland's melting ice better than anyone. Then he disappeared into it.

2 months ago

The Silicon Valley leaders who have experimented with psychedelics

5 months ago

A century ago, the government hired unemployed young men to build America's forests, trails, and parks. Photos show FDR's 'tree army.'

7 months ago

70 years ago, a meteorite landed on an Alabama woman as she took a nap. Here's the strange story of Ann Hodges.

3 months ago

Astronauts and scientists explain why living in space is almost impossible

3 months ago

80 years ago, the US dropped an atomic bomb on Hiroshima. Haunting photos show what happened that day in 1945.

3 months ago

Why living in space is almost impossible

3 months ago

Flying is about to become even more miserable

3 months ago

A mega-earthquake could strike the Pacific Northwest any day — and we're not prepared

3 months ago

Vintage photos show how American cities looked before the EPA regulated water and air pollution

4 months ago

NASA veterans say political pressure and slashed funding are destroying mankind's ability to go on future missions

4 months ago

Priscilla Chan's recruiting pitch? We can't pay as well as tech companies, but we've got GPUs

4 months ago

What happened when the Trinity test bomb detonated, from the creation of green glass to fallout that drifted over 1,000 miles

4 months ago

The CEO of a key SpaceX rival says customers are drawn to his company because it's 'even-keeled'

4 months ago

AI is learning how animals talk to each other, and could someday help humans talk to animals

4 months ago

The hottest temperature ever recorded in every state

5 months ago

Starship's 4th straight rocket explosion is the latest public setback for Musk's Mars dreams

5 months ago

26 photos of the worst hurricanes to have hit the US

5 months ago

How the Smithsonian safeguards 148 million specimens

5 months ago

CEO of space company Axiom breaks down what a $70 million ticket gets you

5 months ago

Elon Musk threatened, then walked back a decision to 'decommission' SpaceX's Dragon spacecraft after Trump hit out at his businesses

5 months ago

Starship fumbled its 3rd flight in a row. It's another setback for Elon Musk.

6 months ago

The historical figures who inspired Nvidia's product names, from Grace Hopper to David Blackwell

8 months ago

A 17-year-old designed a cheaper, more efficient drone. The Department of Defense just awarded him $23,000 for it.

6 months ago

Nuclear engineers want the industry to get 'unstuck' after years of bad PR. The AI boom could be the key.

6 months ago

14 of the most significant archaeological sites in the US

6 months ago

Blue Origin's next crew includes entrepreneurs and founders. Here's who's following Katy Perry and Lauren Sánchez into space.

6 months ago