Climate change is eroding the "nighttime lull" that helps firefighters contain wildfires. A study of 9,000 blazes across North America found that fire-conducive hours have increased by 36% since the 1970s, with "round-the-clock" burning conditions jumping by 232% in some northern regions.

Climate change is eroding the "nighttime lull" that helps firefighters contain wildfires. A study of 9,000 blazes across North America found that fire-conducive hours have increased by 36% since the 1970s, with "round-the-clock" burning conditions jumping by 232% in some northern regions.