Scott Dance

• Extreme Weather

Observations are enough to make scientists confident that the current period of warming is exceptional.

• Extreme Weather

Scientists say to brace for more extreme weather and probably a record-warm 2023 amid unprecedented temperatures.

• Extreme Weather

Canadian wildfire smoke has caused U.S. air quality to plummet once again -- and it will continue to threaten Americans' health in the months to come.

• Extreme Weather

Smoke from Canada's wildfires is again drifting across large swaths of the United States, bringing air pollution and concerning air quality. Follow live updates.

• Transportation

The decision would change a serious derailment in early February into a national event that consumed weeks of attention, generating apocalyptic images of thick black smoke spewing over the small Ohio community.

• Transportation

The National Transportation Safety Board is conducting two days of hearings in East Palestine, Ohio, to gather evidence on the train derailment and emergency responses.

• Extreme Weather

Climate scientists can’t agree on what, exactly, has triggered such rapid warming and how alarmed they should be.

• Extreme Weather

Climate scientists say El Niño will probably push average global temperatures beyond a record set in 2016.

• Extreme Weather

Frigid and coursing rivers have killed at least eight people, a delayed consequence of an onslaught of the winter’s atmospheric rivers.