Lightning over Patagonia, Argentina.
Whips of lightning cut a dramatic scene across a storm-darkened sky in Patagonia, Argentina. Most lightning occurs within cumulonimbus clouds like these, but it can also be released from wide, layered formations called stratiform clouds.
Photograph by William R. Curstinger

Natural Disasters Quiz: Are You a Master of Disasters?

Do you know a Force-5 from a Cat-5? Saffir-Simpson from Homer Simpson? Find out if you're a force of nature or a tropical depression with this natural disasters quiz!

Natural Disasters Quiz: Are You a Master of Disasters?