Wgtd's The Morning Show With Greg Berg

Dr. Jerald Mast, Associate Professor of Political Science at Carthage College,  talks about Climate Change - sketching the history of how long various scientists have been voicing concern about climate change,  outlining when it began to be discussed by politicians, and how the issue is being approached today in this highly polarized political landscape in which we currently find ourselves.   He also talks about the large field of Democratic candidates for president and how central the issue of climate change is likely to be in the 2020 presidential race.