Before the Big Bang
Maverick cosmologists contend that what we think of as the moment of creation was simply part of an infinite cycle of titanic collisions between our universe and a parallel world
by Michael D. Lemonick, Illustrations by Moonrunner Design
Why is AIDS Worse in Africa?
The rate of infection in some parts of the continent is 100 times higher than in the United States, yet sexual activity is similar. Epidemiologists, forced to reconsider their theories of how the disease spreads, have come up with surprising new insights.
Stalking Spiders
Tarantulas reveal intriguing mammal-like behaviors, says a scientist who cares enough to study them (not to mention keep 500 of them alive in his lab)
The Secret Life of Snow
A bizarre and fascinating world of icy plates, needles, and six-armed flakes emerges from the lab of Eric Erbe and William Wergin
Uncovering America's Pyramid Builders
The grandest culture north of the Maya created a city of 20,000 people, built monuments rivaling Egypt's Great Pyramid, then vanished into oblivion
What Does Science Say You Should Eat?
Most diets aren't realistic or advisable, including the U.S. agriculture department's famous food pyramid. Instead, a Harvard scientist recommends a new way of eating based on the world's largest and longest food study.