The true story of how a scientist saved the planet from environmental disaster. Mexican American Mario Molina is a modernday hero who helped solve the ozone crisis of the 1980s. Growing up in Mexico City Mario was a curious boy who studied hidden worlds through a microscope. As a young man in California he discovered that CFCs used in millions of refrigerators and spray cans were tearing a hole in the earths protective ozone layer. Mario knew the world had to be warnedand quickly. Today Mario