Mar 30, 2008 - Tonight on "60 Minutes," Lesley Stahl interviewed Al Gore, along with his wife, Tipper , and discussed the environmental crusader's new $300 million ad campaign for global warming awareness, funded in part by proceeds from the book and movie of "An

Inconvenient Truth" plus prize money from Gore's 2007 Nobel Peace Prize. Gore and his Alliance for Climate Protection have hired crackerjack ad shop…