Wildfire seasons have gotten almost 20 percent longer
All forested continents except Australia now at greater risk than in 1979
![wildfire](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/07/ts_wildfire_free.jpg?fit=860%2C460&ssl=1)
WORLD ON FIRE The average length of wildfire seasons has risen dramatically in recent decades, threatening ecosystems, economies and the climate, scientists report.
ari Greer/Gila National Forest (CC BY-SA 2.0)