This Week: Ancient water = ancient habitat?
In the News: Sinkholes: When the ground collapses!
Coming Thursday: Roaches: A lot smarter than you thought!
What are the different types of thunderstorms? Thunderstorms can be classified by severity or structure. For example, the National Weather Service defines a severe thunderstorm as one that produces one or more of the following: wind gusts of at least 58 mph, hail at least one inch in diameter, or a tornado. A supercell thunderstorm [...]