Raging fires throughout the United States and Australia over the past year have put vulnerable species at risk. But not all blazes are devastating—in fact, fire can promote biodiversity. In grasslands, fires prevent trees and roots from taking hold. This allows grazing animals the space and vegetation they need to thrive. As the pattern of wildfires changes, a new review in Science outlines effective ways to let natural fires burn, while preventing out-of-control blazes. Watch to learn how a few of these techniques have been applied around the world.