4 Degrees Warmer: Great Cities Wash Away
If the world warms by four degrees oceans will rise and glaciers will disappear, cutting off fresh water to billions.
Six Degrees Could Change the World :
SUN FEBRUARY 10 8P et/9P pt : http://channel.nationalgeograp...
Author: NationalGeographic
Length: 02:35
Views: 47771
Tags: change could degree degrees four global six the warming world
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