Nell Greenfieldboyce
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The Artemis II astronauts are readjusting to life on Earth after their historic mission around the moon.
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With the last major firing of its engine, the Artemis II spacecraft is now on a path that will take it around the moon and back. -
NASA's long-awaited Artemis II mission launched Wednesday with four astronauts on board. Their capsule is orbiting Earth, and if everything checks out, NASA will send them off toward the moon.
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In an unprecedented move, NASA is bringing an astronaut crew home early from the International Space Station because one astronaut has an undisclosed medical condition. -
Archaeologists say they've unexpectedly found a huge Stone Age cremation pyre in southern-central Africa. The discovery is helping them understand the history of cremation.
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Snow isn't always white; algae can make it look green, red, or orange, and scientists are trying to understand how and why these colorful patches appear.
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Blue spotted salamanders can supercool themselves so they can walk over ice and snow during their spring migrations.
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If your video calls keep flickering and freezing, the stakes might be higher than a few moments of awkwardness. Experiments show glitches during video calls could undermine your chances for success.
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For some would-be ant queens, the easiest way to take over a colony is to dupe its worker ants into committing regicide.
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Researchers studied octopuses in the wild to learn whether they favor one of their eight arms over the others for certain jobs, but found the creatures give new meaning to ambidextrous.
