Geladas (a male and female in the Simien Mountains) signal their status with the livid skin on their chests.

Ethiopia’s Exotic Monkeys

High in the Simien Mountains, researchers are getting a close-up look at the exotic, socially adventuresome primates known as geladas

The NASA mission, called Stardust, brought back the only material—other than moon rocks—taken directly from a extraterrestrial body.

The Secrets Within Cosmic Dust

Dust captured by a spacecraft from a comet’s tail holds clues to the origin of the solar system

Birds That Fish… With Bait

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Scientists Set Phasers to Stun

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Watching Coral Sex

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Calling All Dino Blogs

Baltimore has been a national hotspot for rat studies for well over half a century.

Crawling Around with Baltimore Street Rats

The “urban ecosystem” serves as a research lab for scientist Gregory Glass, who studies the lives of the Charm City’s rats

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World War I: 100 Years Later

Jingo the Dinosaur—a World War I Mascot

The papier-mâché Stegosaurus featured in the April 1, 1916 issue of the magazine The Survey was no joke

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