A desert is defined as an area where less than 19.6 inches (50 centimeters) of rain falls each year. Deserts cover about one third of the Earth's land surface. Examples of famous deserts include the Sahara, Atacama and Mojave deserts. Deserts aren't just hot and dry places, though; like Antarctica, they can also be cold and dry. Read below for news about these driest spots on Earth.
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Super-Sized Sandbox Reveals How Dunes Grow
sand dunes
January 12th, 2014
For the first time, scientists have watched Earth's winds give birth to dunes. Results from the giant Mongolian sandbox confirm long-held models of sand dune formation.
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Carbon Dioxide Greening Deserts
Australia Outback
May 31st, 2013
Desert plants leafing out as atmospheric carbon dioxide levels rise.
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