Air pollution and climate are linked, but defining the details of that connection is tricky. One uncertainty is exactly what happens when aerosols -- the tiny airborne particles in mist, smoke and smog -- meet clouds. Aerosols and clouds can have both cooling and warming effects on Earth’s atmosphere.
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Water is constantly being moved about our planet. The water, or hydrologic, cycle describes how water changes from liquid to solid to vapor and how it is stored in a variety of places: under the ground, in the atmosphere and ocean and in the form of ice and snow.
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On May 2, 2008, Cyclone Nargis caused the worst natural disaster in the history of Myanmar, a country in Southeast Asia that is more commonly known as Burma.
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