BradCast 7/13/2015: (Physicist Joe Romm; Scott Walker punker Ian Murphy)
b"Busy week kicks off: Wisconsin Gov. Scott Walker makes his 2016 run official; Hillary Clinton takes shots at both him and Jeb Bush in a major economic speech; Trial begins against North Carolina's GOP voter suppression law. Then we're joined by physicist Joe Romm, who debunks the newest global warming denier scam about a "mini ice-age", and offers his thoughts about an email charging Exxon knew about CO2 and climate change since the early 80s, and a newly unearthed 1969 Nixon Admin memo warning about global warming and sea level rise. Plus: Brad's interview with Ian Murphy, the man who punked Scott Walker by calling him and pretending to be David Koch."