Great Mysteries of Human Evolution
New discoveries rewrite the book on who we are and where we came from
by Carl Zimmer
To Catch a Comet
In January a clever probe will meet up with a flying rock that may hold the secret to life on Earth
In His Own Words: Michael Hawley
A scientist at MIT's Media Lab reveals the true nature of a college of arts and sciences
Discover Roundtable: Can We Make Wireless Work?
Cell-phone coverage in the United States may be the worst in the world, and data transmission is even more troubling. Yet insiders insist there's hope
Art in Orbit
Boldly going where no gallery has gone before
They Came From Outer Space
Does the very existence of cosmic rays defy the laws of physics?
The Electronic Grizzly
Can new 4-D mapping techniques keep these majestic creatures alive?