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What's Important - Global Warming
Global Warming and Climate Change is the biggest environmental threat humanity will face in the 21st century. Caused by an overabundance of the heat-trapping gas, carbon dioxide, in the earth's atmosphere, global warming has caused changes in climate worldwide as well as disruptions and dislocations in habitats and wildlife.
There is a lot we can do to combat climate change and global warming -- from moving to renewable energy to driving hybrid cars. Read on to find out more about global warming and what you can do to help slow it down.
Watch Leonardo's Short Film on Global Warming >
Read President Mikhail Gorbachev's article on Global Warming >