Singer Sheryl Crow and environmentalist Laurie David have been traveling across America on a two-week Stop Global Warming College Tour, which winds up today at George Washington University. Crow and David (co-producer of the documentary "An Inconvenient Truth" and wife of "Curb Your Enthusiasm's" Larry David) have been touting their cause and chronicling their travels in a rather idiosyncratic blog. Here, on Earth Day, are a few excerpts: David (4/10, Dallas): I am jogging outside in 40 degree freezing cold . . . 70 degrees in January and 40 degrees in April. That is exactly why Sheryl Crow and I...
