Plankton Explains Everything

Those microscopic organisms that grow in all kinds of water provide at least 50% of the oxygen in our air — every other breath we take comes from plankton. Turns out, plankton are severely threatened by our warming climate. Find out just what that means for humans when host Susan McCabe hears from three plankton experts – whale doctor Tag Gornall, diver and plankton protector Karlista Rickerson and plankton artist Rebecca Welti. This is about as REAL as it gets.