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Coronavirus
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Covid deaths in U.S. hit lowest level in 10 months
Vaccines have been crucial to declining deaths and coronavirus cases, experts say.
NASA spacecraft detects a constant 'hum' deep in the cosmos
The faint vibrations were first picked up in 2017 by the Voyager 1 probe, which has spent almost a decade journeying through interstellar space.
NASA's James Webb Telescope undergoes final tests ahead of October launch
With its infrared eyes, the next-generation observatory will be able to study some of the oldest and most distant stars in the universe.
Shrunken head artifact used as prop in John Huston film revealed to be human
Researchers say their tests show the object is what it was supposed to be — a genuine shrunken human head — opening the door to its return to Ecuador.
China defends handling of rocket that fell to Earth
Booster rockets usually fall back to Earth soon after takeoff. China’s space agency hasn’t said why the Long March was sent temporarily into orbit.
String of satellites baffles residents, bugs astronomers
This month, SpaceX has already launched dozens of satellites. It is all part of a plan to bridge the digital divide and bring internet access to underserved areas of the world.
A giant sequoia in California is still smoldering from last year's wildfires
The burning tree was found by the National Park Service during surveys in the area to assess damage from the 2020 Castle Fire.
Huge Chinese rocket is hurtling toward Earth — but no one knows where
There is a tiny chance the debris could hit New York, Los Angeles, Madrid, Rio de Janeiro, the Nigerian capital of Abuja or Beijing.
Is San Francisco on the verge of a herd immunity breakthrough? Experts are optimistic
The city kept case numbers low, and it has one of the highest vaccination rates of any major U.S. city. Now comes the real test.
China’s emissions exceed those of U.S. and developed countries combined, report says
The findings come after a climate summit during which Chinese President Xi Jinping reiterated his pledge to make sure the nation’s emissions peak by 2030.
Jeff Bezos' Blue Origin is auctioning off a seat on its first space tourism flight
The first flight of the company's New Shepard rocket and capsule will take place July 20 and one seat will be auctioned off to the highest bidder.
Fifty years later: Earth Day has descended into GOP-driven chaos, experts warn
Changing global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.