India, April 20 -- Wildfires across North America are burning longer, starting earlier and persisting into the night, study finds

Climate change-driven heat and dryness are increasing "potential burning hours" and extending fire seasons

Night-time cooling and humidity recovery are weakening, allowing fires to intensify after sunset

Some regions, including California and the US South-West, are seeing sharp rises in fire-prone hours

Scientists warn shrinking "quiet periods" are making fires harder to control and straining firefighting efforts

Wildfires across North America are increasingly defying their traditional "active day, quiet night" cycle, with scientists warning that climate change is reshaping the fire calendar - altering whe...