Climate

Climate

Carbon dioxide in atmosphere reaches landmark level

At 400 parts per million, greenhouse gas concentration is now higher than it has been for millions of years.

Climate

Ice loss from Greenland’s glaciers may level off

Simulation suggests long-term effect on sea level not as dire as some predictions.

Climate

Cuts in some greenhouse gases could slow sea level rise

Methane, ozone and other short-lived pollutants have a big impact on ocean heights, simulation finds.

Climate

Rising carbon dioxide means more air turbulence

More jarring flights are likely, simulation suggests.

Earth

Moderate climate warming could melt permafrost

Ancient cave formations in Siberia reveal effects of warmer past on frozen ground.

Humans

Cold spells were dark times in Eastern Europe

Cooler periods coincided with conflicts and disease outbreaks, a tree-ring study spanning the last millennium finds.

Climate

Climate change goes to extremes

Some recent weird weather tied to warming.

Climate

Extremely Bad Weather

Teasing out global warming's role in worsening hurricanes, droughts and other extreme events.

Climate

Gulf Stream might be releasing seafloor methane

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

Earth

Himalayan melt may be less than thought

Satellite data suggest net ice loss has been modest.

Earth

Extreme hot spells rising

Analyzing six decades of temperature records reveals inexorable warming and increasing episodes of extreme heat.

Earth

Stronger storms may destroy ozone

Extra water vapor churned high into the atmosphere by climate change–fueled tempests could trigger destructive chemical reactions.