Guest: Roger Helm, Ph.D ecologist.
Earth Day celebrates it's 48th birthday.
To mark that milestone McNair speaks about the most important issue facing our environment - Climate Change and the solutions for it. Roger Helm has a doctorate degree in biological ecology from UC Davis. As a senior scientist for the U.S. Fish and Wildlife Service, he led environmental contamination assessments in the U.S. and internationally and has written peer review scientific papers on global climate change.
(Player opens in a new window)