Host Don Fitz and Environmental Science instructor Dan Lehocky discuss the possibility of a "tipping point," when the climate would go out of control with it being too late to do anything about it. They look at scenarios based on different potential temperature increases. Footage form the forum "Environmental Racism and Global Warming" features Henry Robertson. This Green Time (No. 271) is produced by the Gateway Greens in conjunction with KDHX. Call 314-727-8554 or contact fitzdon@aol.com for information. See http://stlcamp.org/greentime for a listing Green Time shows.

Airs on Double Helix Channel 21 in the City of St. Louis:

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