In honor of its 40th anniversary, Oprah is orchestrating an Earth Day mom switcheroo. Find out what happens when moms from two families -- one that admits to being wasteful, and one that goes to the extreme to be green -- switch places to see how the other side lives. Then, the Oscar-winning hero team behind the documentary, "The Cove," shares how they risked their lives to expose a deadly secret. Plus, straight from the Pacific, we’ll give you an update on the ocean's garbage patch swirl that is threatening the health of our planet. What small things can you do that can make a big difference. video

