Fires sparked by lightning strikes that hit California early Tuesday razed over 13,000 acres in the foothills of the Sierra Nevada, officials said.

© Noah Berger/Associated Press

A giant fire last year consumed much of Canada’s Jasper National Park. Canadian scientists leading research into wildfires are using the blaze to learn lessons for the future.

© Jesse Winter for The New York Times

The Trump administration could update the Roadless Rule to permit temporary roads to allow for forest thinning.

Urban wildfires are becoming public health emergencies.

Across the country, unmasked wildfire fighters are falling ill and dying. Hannah Dreier talks about her investigation into the risks these workers face.