hurricane hurricane

A satellite image shows Tropical Storm Hermine forming in the Gulf of Mexico on Wednesday. The storm is expected to make landfall north of Tampa late Thursday night or early Friday morning, the National Hurricane Center says. NASA/NOAA GOES Project hide caption

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Hurricanes Lester, Madeline and Gaston (from left to right) are seen from the International Space Station on Aug. 30. NASA Johnson YouTube/NASA composite hide caption

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NASA Johnson YouTube/NASA composite

Vincent Schaefer, one of the General Electric scientists who worked on Project Cirrus in the 1940s, makes snow in the lab using dry ice. General Electric hide caption

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General Electric