The Weather Channel
California's giant sequoias were once viewed as nearly fire-proof. It's true that the ancient trees are remarkably resistant to fire. The trees' thick bark acts as a protective agent from flames, and their canopies can often be too high for fire to reach. Sequoias even benefit from wildfires, as the warmth produced by fire aids to open the trees' cones and distribute seeds, while the burn clears undergrowth so the seeds can take root.