num_pages: 40
description: The true story of how a scientist saved the planet from environmental disaster.Mexican American Mario Molina is a modern-day 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 earth's protective ozone layer. Mario knew the world had to be warned--and quickly. Today Mario is a Nobel laureate and a recipient of the Presidential Medal of Freedom. His inspiring story gives hope in the fight against global warming.
language: English
title: Mario and the Hole in the Sky: How a Chemist Saved Our Planet
publisher: Charlesbridge