Bill Ripple & Chris Wolf - Climate Change: A Warning

Professors William Ripple and Christopher Wolf are two of the authors of "World Scientists' Warning to Humanity: A Second Notice", regarding the potentially calamitous effects of climate change on the not too distant horizon.  We talk about human extinction, climate denial, and what you can do to make a difference.

For those concerned about global environmental and climate challenges, the Alliance of World Scientists is still accepting signatures from scientists to sign their paper. There are currently about 21,000 scientist signatories from 184 countries that have added their names to this paper. If you are a scientist, you can sign at http://scientistswarning.forestry.oregonstate.edu/

 There is also an invitation for nonscientist individuals and all organizations to endorse the World Scientists’ Warning to Humanity: A Second Notice at http://www.scientistswarning.org/