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Covering some 70 percent of Earth's surface, clouds play a key role in our planet's well-being. But how do they form, why are there so many types, and what clues can they give us about the weather and climate to come? Try your hand at classifying clouds and investigating the role they play in severe tropical storms. Featuring NOVA-produced videos and real feeds from NASA Earth Science satellites, this Lab challenges you to classify clouds and investigate the role they play in severe tropical storms. This project is part of the larger NOVA Labs platform.