The ancestor of all known life was a microbe that ate hydrogen from deep-sea volcanoes

5 reasons why biodiversity is a big deal

Everything you ever wanted to know about tumbleweeds

Earth gets a surge of new ocean sanctuaries

For the first time, a mammal species is extinct because of human-induced climate change

What to know right now about Zika virus

Olm eggs finally hatch in rare 'dragon' birth

See how bees sense a flower's electric field

Is milkweed really the key to saving monarchs?

Native people built seashell islands off Florida

New NASA map forecasts Zika risk

11 amazing antics of ants