National Geographic
About 1,500 active volcanoes can be found around the world. Learn about the major types of volcanoes,...
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At any moment, about 2,000 thunderstorms are occurring worldwide. Learn how thunderstorms form, what causes lightning and...
Hurricanes are the most powerful storms known to man. Find out when hurricane season peaks, how the...
What is air pollution? Learn how greenhouse gasses, smog, and toxic pollutants effect climate change, and human...
Forests cover about 30% of the planet, but deforestation is clearing these essential habitats on a massive...
