Tiny crabs and other sea life live next to a hot hydrothermal vent on the ocean's floor.

The Ocean Vents Where Life on Earth Likely Began

In a recent paper, biologists outlined a three-part hypothesis for how all life as we know it began.
Dramatic skies over the Arenal Volcano, Costa Rica

Central American Volcanoes Offer Clues to Earth’s Geological Evolution

Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise.
Pollution Rising from Factories in Ciudad Juarez, Mexico

Descubriendo pistas sobre la contaminación local con magnetismo

Un análisis químico de una área puede determinar cuánta contaminación hay en el aire. Pero hay un método mucho menos costoso que podría ayudar a las comunidades más pobres.
Pollution Rising from Factories in Ciudad Juarez, Mexico

Magnetism Can Reveal Levels of Local Air Pollution

A chemical analysis of an area can find out how much pollution is in the air. But there's a much less expensive method that could help poorer communities.
Restoration of an American mastodon herd by Charles R. Knight

This Week in Sustainability: From Ice Age to Internet Age, Scientists Look for Clues to Species’ Extinctions

Scientists explore the causes--climate change, habitat destruction, and more--that decimated animals and humans alike, from Ice Age to Internet Age.