Voracious, venomous lionfish are the first exotic species to invade coral reefs. Now divers, fishermen—and cooks—are fighting back
The Hubble Space Telescope’s Finest Photos
Now that the telescope has received its final upgrades, we look back on Hubble’s most memorable images from space
In Search of the Mysterious Narwhal
Ballerina turned biologist Kristin Laidre gives her all to study the elusive, deep-diving, ice-loving whale known as the “unicorn of the sea”
Wild Things: Life as We Know It
Dinosaur gangs, psychedelic fish and long-distance elephant calls
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