Climate

Unleashed cosmic ray bombardment may have eaten up ozone, driving short-term climate swings

In 100-year record, small mammals burrow to beat the heat, but birds either fly away or die

Biden administration set to update the “social cost of carbon” used in greenhouse regulations

Defying cooling from La Niña, roasting heat levels set Siberia and Australia on fire

Debate erupts over long-standing belief that warmer temperatures favor darker variants

Flight in Sweden would set stage for release of small amounts of chalky dust

Nations gather Saturday to assess progress and make new pledges

But the reefs appear to require unpolluted water in order to resist worsening effects of climate change

Deaths and injuries from heat exposure are projected to increase as the climate warms

Researchers debate whether climate change is to blame for monster African event

A new satellite will monitor coastal hot spots, where currents amplify global trends

Along with hot weather, exertion and ill health can heighten danger

Despite election loss, White House tries to influence quadrennial assessment

The food system emits so much greenhouse gas that the world will exceed international climate targets—even if all other sources are eliminated

Nations are increasingly turning to citizens’ assemblies to weigh up climate policies

Roughly half of 100 largest cities have failed to set targets, new report finds