Climate

Wade Crowfoot is head of California’s Natural Resources Agency

Despite glimmers of progress, the world has not achieved decadal targets to protect nature

National Science Foundation program struggles to bridge scientists and communities

Strategy could combat climate change by removing greenhouse gas from the air

New feedbacks add to the impact of warming air

Scientists find first evidence of 5000-year-old drought in a cave in Laos

Weakened Atlantic currents may have driven centurylong bursts of warming

Cost-benefit calculation is one likely target of legal challenges

Fossilized pollen reveals powerful impact of agriculture and other land use changes

Climate models could improve by capturing hidden predictability

Batagay megaslump entices researchers with its deep climate history

Proposed rule is historic but weak, environmentalists say

Landmark study narrows bounds for “climate sensitivity,” ruling out benign warming

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