A signal linked to aliens by a Harvard professor may have been caused by a passing truck

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Side by side images show a picture of Avi Loeb next to a microscope picture of spherical metal balls.
A photo montage showsAvi Loeb (left) says he recovered the remnants of an interstellar meteor on the sea floor near Papua New Guinea (right)

The Washington Post/Getty Image; Loeb et all, arXiv:2401.09882 [astro-ph.EP] https://doi.org/10.48550/arXiv.2401.09882 CC-BY /Insider

Jupiter's moon Europa generates enough oxygen to keep a million people alive for a day, NASA says

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illustration of Europa
This illustration of Europa shows how its icy surface may shine even on its night side, because Jupiter is constantly bombarding it with radiation.

NASA / JPL-Caltech

Should we end daylight-saving time?

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Moving clocks forward by an hour might seem harmless. But many are calling for an end to daylight-saving time because it could harm our health.

'Oppenheimer' fact v. fiction: What the movie got right and wrong according to a nuclear historian

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J. Robert Oppenheimer in the classroom.
J. Robert Oppenheimer in the classroom.

Bettmann/Getty Images

Svalbard Global Seed Vault accepted a record-breaking number of seed deposits amid climate crisis

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The Svalbard Global Seed Vault saw its largest number of new contributors in one day and now holds over 1.2 million seed varieties from 77 countries.

Vast reserves of clean hydrogen fuel could be hiding beneath our feet

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four white gas tanks with blue H2 logos on a metal rack
Hydrogen could be a key fuel of the future.

Benoit Tessier/Reuters

$1.5 billion startup says it's getting close to bringing the woolly mammoth back from the dead with elephant cells

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woolly mammoth model with long curled tusks and shaggy hair stands in a museum exhibit with visitors reading a plaque
A woolly mammoth reconstruction at the Caverne du Pont D'Arc in Ardèche, France.

Jean-Marc Zaorski/Gamma-Rapho via Getty Images

The Voyager spacecraft will probably last a billion years, says a scientist on the mission for nearly five decades

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The Voyager 1 spacecraft launching in 1977
The Voyager 1 spacecraft launched after Voyager 2.

NASA/JPL-Caltech/KSC

Scientists want to build 62-mile-long curtains around the 'doomsday glacier' for a $50 billion Hail Mary to save it

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Thwaites Glacier
The Thwaites glacier is the widest on Earth, but it's losing massive amounts of ice each year.

NASA

A grey whale was seen in the Atlantic for one of the only times in the last 200 years. Scientists say it's bad news for the planet.

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close up of a grey whales face underwater
Grey whales

Gerard Soury/Getty Images

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