Try your hand at classifying clouds in this interactive from the NOVA Cloud Lab. 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? This Cloud Lab interactive challenges you to look closely and classify each cloud type, from cirrus to cumulus to altostratus.
Find out more at the NOVA Cloud Lab.