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Covid deaths in U.S. hit lowest level in 10 months
NASA spacecraft detects a constant 'hum' deep in the cosmos
NASA's James Webb Telescope undergoes final tests ahead of October launch
Shrunken head artifact used as prop in John Huston film revealed to be human
China defends handling of rocket that fell to Earth
String of satellites baffles residents, bugs astronomers
A giant sequoia in California is still smoldering from last year's wildfires
Huge Chinese rocket is hurtling toward Earth — but no one knows where
Is San Francisco on the verge of a herd immunity breakthrough? Experts are optimistic
China’s emissions exceed those of U.S. and developed countries combined, report says
Jeff Bezos' Blue Origin is auctioning off a seat on its first space tourism flight
Changing global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.