Climate

U.S. effort could also date controversial Hiawatha impact crater

Okmok blast veiled sky 1 year after Julius Caesar’s murder

Malformed spores suggest powerful storms drove ozone loss and led to sterilizing UV radiation

Radioactivity in the air may have boosted precipitation during the Cold War

New study finds a growing number of places with intolerable conditions

Early warnings of drought can help prevent catastrophic famines

“Conquest by hydraulic superiority” helped Wari state expand

Scientists are figuring out how more winter floodwater can be stored underground, but agricultural cutbacks may still be needed

Researchers have harnessed climate patterns to forecast famines months in advance

Lawmakers and pundits cast doubt on numerical forecasting

NASA ICESat-2 satellite fills in coastal “white ribbon” of missing seafloor data

Sediment core reveals rapid swings in ocean “conveyor belt” that warms Europe

Alaska, where 1 million hectares burned, was an exception

Atmospheric blocking events, which drive extreme heat and cold, may increase with climate change

Global warming won’t trigger cataclysmic methane releases any time soon

Emissions from U.S. homes and businesses now kill 28,000 people a year