A 'lost valley of cities' built thousands of years ago has been found in the Amazon

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Aerial shot of river in the Amazon rainforest, Ecuador.
Amazon rainforest, Ecuador.

Mark Fox/Getty Images

Meet the female force who halted a major development project to preserve her working-class neighborhood and make it a leader in clean energy

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Headshot of Elizabeth Yeampierre.
Elizabeth Yeampierre is the executive director of UPROSE — a Sunset Park community organization focused on sustainability and resiliency.

UPROSE

Peruvian researchers rule out aliens as the creators of 2 mysterious dolls

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A scientist in a white coat holds a small humanoid figurine made of paper, glue, and animal bones.
Forensic archaeologist Flavio Estrada from Peru's prosecutor's office shows a doll, which was seized by authorities before it was shipped to Mexico, during a press conference to explain what it is made of at the Archeology Museum in Lima, Peru.

Martin Mejia via AP

Natalia Grace's adoptive parents accused her of being an adult. She says a DNA test confirmed her real age — here's what the results actually mean.

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Natalia Grace holds a phone showing a photo of herself age 7 in makeup on
Natalia Grace holds a phone showing a photo of herself age 7 in makeup on "The Curious Case of Natalia Grace: Natalia Speaks."

Investigation Discovery

Take a look inside the US' Manned Orbiting Laboratory, a Cold War-era crewed spy satellite that never made it to space

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Concept image of the United States Air Force's proposed Manned Orbiting Laboratory.
Concept image of the United States Air Force's proposed Manned Orbiting Laboratory.

Heritage Space/Heritage Images via Getty Images

Former SpaceX engineers explain how the US's first moon landing mission in decades may have gone wrong and how to prevent similar anomalies

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ULA rocket taking off into space with a giant billowing cloud of gas underneath it.
Astrobotic's Peregrine Lunar Lander launched on a United Launch Alliance Vulcan Centaur rocket.

CHANDAN KHANNA/Getty Images

The world hasn't been this warm in 100,000 years

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A person cools off in a fountain during a heat wave in Rome this past July.
A person cools off during a heat wave in Rome this past July.

Remo Casilli/Reuters

Scientists want to use a self-consuming rocket to help control the space junk problem

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3 researchers standing next to rocket engine prototype
The researchers and their prototype.

University of Glasgow

Astrobotic's lander might still travel far enough to reach the moon, but the moon won't be there

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A picture taken from an onboard camera shows on of the sides of Astrobotic's Peregrine lander. A small sliver of light is seen on the right hand side.
A new snap of the Peregrine lander was shared by Astrobotic on X on Tuesday.

Astrobotic

A shark regenerated an entire hole in its fin in under a year and scientists got the amazing transformation on camera

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A live shark's fin with a giant hole in it.
Rather than a tracking tag telling scientists where this shark traveled, its violent removal let them observe an unexpected regeneration process.

Josh Schellenberg, CC BY-ND

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