Recent breakthroughs in dating ancient samples of DNA and human remains have led to a radical reassessment of human origins. At least ten other early human groups–some with the cognitive capacity to make …

The neutrino is among the cagiest of particles, a subatomic wisp so ephemeral it could pass through light years of lead with more ease than a hot knife through butter.

Astronauts who’ve lived on the International Space Station and “walked” in space tell all: what it’s like to ride on a space ship, and to eat, sleep, exercise, and even do science—in space.

Leading researchers in the arena of human enhancement are turning-back the clock by reopening “critical windows” for cognitive and physical development that until recently seemed to permanently close after childhood. Brian …

What happens when a black hole a billion times more massive than our sun powers a star-like object? It’s a quasar of a question. These massive and extremely remote celestial …

For all that Darwin contributed to our understanding of the biological world, he was haunted by one vexing question: How does the incremental process of evolution suddenly produce, say, humans—animals who walk upright, communicate through language, and possess the brainpower to travel to the moon?