Global Warming: What We Knew in 82 0 Randall Gross ScienceMarch 2012Friday, March 30, 2012 at 2:51 pm PDT • Views: 1,627 Video Andrew Dessler Global Climate Change Global Warming Laboratory Mike MacCracken Sandia Labs Senior Researcher Spokane Community College Water Vapor Feedback Global Global Sea Ice James Hansen Julienne Stroeve Water Vapor Polar Ice Lecture Video Peter Sinclair Climate Crock