Dedicated Scientists and Birdwatchers Tracked Down These Five ‘Lost’ Birds

Marine biologist Dimitri Deheyn walks over to an isolated aquarium in a room at the Scripps Institution of Oceanography. All around him, pumps churn in blue vats, rubber boots squeak

A rhesus macaque on Cayo Santiago, which is less than a mile east of Puerto Rico. Rhesus macaques spend upwards of 20 percent of their time engaged in cooperative behaviors

Asteroid impacts and volcanism have led to mass extinctions on our planet. Illustration by Emily Lankiewicz / NASA / Public Domain Life’s first major catastrophe crept across the planet with