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- Global Warming. NASA Earth Observatory.http://earthobservatory.nasa.gov/Experiments/PlanetEarthScience/GlobalWarming/GW.php
- Greenhouse Effect. HyperPhysics.http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/grnhse.html
- Pearce, Fred. "Instant Expert: Climate Change." New Scientist. Sept. 1, 2006.http://www.newscientist.com/article/dn9903-instant-expert-climate-change.html