Life at the Edge|
Life survives on Earth in places you'd never guess. Extreme environments show how life could adapt to other worlds.
Worlds Beyond Earth|
What's out there? Follow these links to explore the solar system and beyond.
Looking for real aliens in the Search for Extraterrestrial Intelligence.
Nobody Here but Us Earthlings|
Most scientists believe life could exist elsewhere in the universe; very few believe it has visited Earth. Find out why.