Show 188 Global Warming. Mark Taylor speaks with Professor Scott Amrstrong of the Wharton School of Business at the Univ. of Pennsyvania, also associated with the Heartland Institute. Professor Armstrong is internationally known for his pioneering work on forecasting methods. Recently, He has put forth a scientific challenge to former Vice-President Al Gore regarding Global Climate Modeling. Why did he propose this global warming challenge to Al Gore? Professor Armstrong explains his reasoning behind his challenge. Mark takes call on the subject as well. 7.9MB 34 minutes