"In the next 25 years, we are looking at world where there will be more plastic in the ocean than fish," said Michael Waas, a vice president of TerraCycle, which works with companies like Procter & Gamble, PepsiCo and Colgate-Palmolive on their recycling challenges. They have, for example, recycled toothbrushes and toothpaste tubes into playgrounds, he said.