Wildfires can begin from a single dropped match or the remains of a campfire, and they're capable of spreading faster than a person can run. Wildfire season lasts throughout the summer in the American West. In recent years, fires have become both more frequent and more severe, due to factors such as high temperatures and drought.

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Key Facts In This Video

  1. Every fire requires heat, oxygen, and fuel. 01:25

  2. Fires can renew ecosystems by encouraging new growth. 02:26

  3. Wildfires are increasing in frequency and severity across the world. 07:06

Written by Curiosity Staff May 21, 2015