Articles

Old Mars Rover Finds New Signs of Life

The Opportunity rover, still chugging across Mars after 10 years, has found that the planet might have been surprisingly biology-friendly

See more Time.com Articles

Photo Essays

View more photo essays

Time.com Specials

Heroes of the Environment 2009

From saving wild mountain rivers in China to measuring the Arctic's icy expanse, from protecting the lush forests of Africa to conducting a feisty online debate,...

View All Specials