Laurie David, ex-wife of Larry David, is a media savvy powerhouse. She founded the Stop Global Warming Virtual March, produced the Academy Award winning documentary An Inconvenient Truth, and launched the Stop Global Warming College Tour with Sheryl Crow. She's been featured on the Oprah Winfrey Show, Today, and Good Morning America; is a regular contributor to the Huffington Post, and is author of The Down-to-Earth Guide to Global Warming.