A boat aptly called the Plastiki, made out of 12,500 recyclable plastic bottles filled with carbon dioxide, has set sail for a great voyage through the Pacific. While it seems like an extreme stunt, the journey has more of a purpose than just seeing if a plastic boat can make the trip. By now, many of us have heard about the giant collection of floating plastic known as the Great Pacific Garbage Patch. The large aquatic dump is located in the North Pacific Gyre, one of the five major vortices of currents in the world's oceans. It is twice the size of Texas and contains billions of tiny pie