Llamas can still be found at Machu Picchu today.

The Secret to Machu Picchu’s Success: Llama Poop

The Incas used llama dung as fertilizer to grow maize, and fuel an empire

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One Dinosaur Too Many?

Are there too many dinosaurs? Paleontologist Jack Horner thinks so, and he explained his reasoning in a short TED talk last month

A Spinosaurus sculpture near an ice cream shop in California.

Dinosaur Sighting: Spinosaurus Scoop

Spinosaurus may not be as popular as Tyrannosaurus, but sculptures and models of the sail-backed predatory dinosaur are common along America’s roadsides

A model of estimated fault slip for the March 2011 Japanese earthquake.

What Scientists Are Learning About the 2011 Japanese Earthquake

What scientists are learning from “the best recorded earthquake ever” could help prepare for future ones

A restoration of Apatosaurus

Dinosaur Skin Scraps Are a Jurassic Mystery

Black-footed ferrets at the National Zoo

Black-Footed Ferrets and Other Endangered Critters

The subject of endangered species can be a depressing one, but there are also many reasons to be hopeful

Repeated in pop culture for a century, the notion that humans only use 10 percent of our brains is false. Scans have shown that much of the brain is engaged even during simple tasks.

Top Ten Myths About the Brain

When it comes to this complex, mysterious, fascinating organ, what do—and don’t—we know?

Paleontologist Philip Currie poses with a tyrannosaur skull.

Tarbosaurus Gangs: What Do We Know?

The proposal of pack-hunting dinosaurs is old news in paleontological circles, and the evidence to support the claims about Tarbosaurus hasnt been released

A mummified princess from Thebes (known as Luxor during her time) is the earliest person known to have had coronary heart disease

Ancient Egyptian Princess Had Coronary Heart Disease

Coronary heart disease isn’t just a modern problem—even the ancient Egyptians suffered from it

Kemp's ridleys are the world's smallest sea turtles and are also the most endangered.

North America’s Most Endangered Animals

Snails, marmots, condors and coral reef are among the many species on the continent that are close to extinction

Boneheads by Richard Polsky

Boneheads: A Paleontological Mid-Life Crisis

A guanaco in Chile

Vegetation Determines Animal Migration Patterns

Scientists show that patterns in vegetation across a species’ range determine whether and how it moves

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The Diplodocus Tripod

The Great Barrier Reef

Ocean Acidification and the Battle Between Coral and Seaweed

Ocean acidification creates plenty of potential problems for life in the oceans, but corals might have it the worst

Blogger Sarah brought NASA-mission-themed cookies to the office last week

Why I’m Not Sorry to See the Space Shuttle End

I have to say, when I think about the end of the Space Shuttle program, I’m really not that sorry to see it come to a close

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Tiny Tarbosaurus Shows How Tyrants Grew Up

The new Tarbosaurus juvenile is a truly remarkable specimen

A View From Above of Memphis Flooding

The London Natural History Museum

London Goes Back to the Age of the Dinosaur

Investigators with the Sloan Digital Sky Survey have created the biggest 3-D map of the distant universe ever made.

A 3-D Map of the Universe, No Glasses Required

Investigators at the Sloan Digital Sky Survey track changes in the sky and some of the universe’s great mysteries

The fossil-rich landscape of Wyoming's Bighorn Basin

Wyoming Workshop Offers Teachers a Week With Dinosaurs

Based out of Shell, Wyoming, the workshops can be taken for college credit and are led by Smithsonian paleontologist Michael Brett-Surman

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