Running on Tundra
Each summer a herd of scientists races north, enduring white nights and relentless mosquitoes to study one of the world's harshest ecosystems.
by David Berreby
What the Dinosaurs Left Us
Their fossilized poop shows what they ate.
A Brain That Talks
Our brains are much like those of our primate cousins, so where did we get our uniquely human gift of speech? One human says we simply rewired brain structures devoted to a different, more general primate specialty--vision.
The Bamboo Solution
Tough as steel, sturdier than concrete, full-size in a year.
A Shot in the Dark
The world's first large-scale AIDS vaccine trial will soon begin in Thailand.