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Stopping the Mercury's Rise

Massive projects could keep the global temperature down but with some considerable risks.
Consider the Unfathomable »

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A Changed World

Explore how six degrees of warming are possible in one hundred years.
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He Wrote the Book

Literally. Read Mark Lynas’ book that inspired the program.
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One Step at a Time

Learn about ways to help the Earth. One of the easiest: recycling.
Test Your Knowledge »

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What You Do Counts

Preserve Our Planet is the hub for National Geographic Channel's conservation programming.
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Like something out of a disaster movie, a six degree global average temperature rise
in the next one hundred years could render the world something completely different.

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For a fully interactive version of this site, download the latest Adobe Flash Plug-in. Download now >> Six Degrees Could Change the World Check TV Schedule for Airdates >> The difference between the world we know and something out of a disaster movie is only a matter of degrees. Explore the World at Six Degrees >> A Special Preserve Our Planet Presentation Watch Video of the World At >> 1° 2° 3° 4° 5° 6°