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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...
Grade Level   6 7 8 9 10 11 12
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World Ocean Observatory is the leading organization advocating for the health and sustainability of the ocean through an accessible worldwide network of communication. Through education, partnership, information exchange, public connection, and relentless communications, W2O is committed to building...
Grade Level   5 6 7 8 9 10 11 12
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3
El Niño storms have taken thousands of lives and caused billions of dollars in damage in recent decades. Where do these storms come from? Every two to seven years, trade-winds in the Pacific Ocean slow down or reverse their direction — no one is sure why. Normally, the Pacific trade winds blow...
Grade Level   8 9 10
Classroom Activities Curricula and Instruction
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