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Top 5 Ways that Wildfires Start
Wildfire isn't always bad for a forest -- it can clear brush, fertilize soil and open new space. But if a prescribed burn or even a small campfire gets out of control, it can quickly destroy forest, homes and wildlife. How do wildfires start?
How Tsunamis Work
The wall of water that struck northern Japan on March 11 claimed more than nearly 16,000 lives. While the human and cultural extents of this natural disaster are difficult to grasp, we can explain the physical properties that led to it.
