Earth

Earth

Ozone hole at smallest size in decades

Warm Antarctic temperatures help preserve UV-protecting layer.

Climate

Gulf Stream might be releasing seafloor methane

Greenhouse gas may be flowing into ocean waters off the U.S. east coast.

Earth

Spanish quake linked to groundwater pumping

Draining aquifers likely triggered 2011 tremor that killed nine people.

Earth

Years after big quake, Turkish fault still slip-sliding

Creeping movement underscores the seismic danger threatening Istanbul.

Environment

Elevated carbon dioxide may impair reasoning

Insufficient ventilation allows exhaled gas to build up indoors, diminishing decision-making abilities.

Chemistry

Depths hold clues to dearth of xenon in air

The gas doesn’t dissolve well in minerals deep inside Earth, a discovery that may explain why it’s also scarce in the atmosphere.

Earth

Fish in mom’s diet may alter kids’ behavior

Eating fish that's low in mercury during pregnancy may reduce the risk that a woman's child shows signs of attention-deficit/hyperactivity disorder.

Life

Duck-billed dino could slice and dice

Ancient animal’s teeth were made of six different tissue types.

Earth

Bad days for dinosaurs began long before the last of them died

Earth

Intraplate quakes signal tectonic breakup

The unusual April temblors are the latest in a massive energy release that is cleaving the Indo-Australian crustal plate in two.

Oceans

Soundings

The Story of the Remarkable Woman Who Mapped the Ocean Floor by Hali Felt.

Earth

Earth & Environment

Soot’s contributions to global warming may be overestimated, and unusual source of oceans’ methane discovered.