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.

Water, air, sunlight, plants . . . we need these elements to live in this world. But does the world need us? And what would happen to the world if humans were gone? This is the premise of a thought-provoking picture book from John Coy. His insightful text explores how nature would reclaim the planet, accompanied by Natalie Capannelli's gorgeous watercolor illustrations. Back matter gives further context and discusses what kids (and all of us) can do to truly help our planet.

Imagine serving as a park ranger for our U.S. National Parks! If you were a national park ranger, you'd spend every day in one of the most treasured places in America. You'd wear a special uniform, a hat, and a badge—but sometimes you might also need snowshoes or a life jacket. Maybe you'd track the movements of wild animals. You could help scientists make discoveries. You might even be part of a search and rescue team! You'd have an amazing job protecting animals, the environment, and our country's natural and historical heritage, from the wilds of Denali to the Statue of Liberty.

Click flashlights, light lanterns, and get ready to turn electric lights out to celebrate Earth Hour! Wherever you are, you can help our planet. Kids around the world use electric energy to do all kinds of things--adults do, too! From cleaning the clothes we play in, to lighting up our dinner tables, to keeping us warm and toasty when the weather is cold, electricity is a huge part of our lives. Unfortunately, it can also have a big impact on our planet. Earth Hour--a worldwide movement in support of energy conservation and sustainability--takes place each March and is sponsored by the World Wildlife Fund for Nature (WWF). During Earth Hour, individuals, communities, and businesses in more than 7,000 cities turn off nonessential electric lights for one hour. Across each continent--from the Eiffel Tower to the Great Wall of China to the Statue of Liberty--one small act reminds all of us of our enormous impact on planet Earth.

The sun is out in the day and always has a circle shape. The moon's shape seems to change and you can sometimes see it in the daytime and at night. What are the sun and the moon? How are they the same and how do they differ? Hop into your spaceship a

An inspiring look at young climate change activists who are changing the world The world is facing a climate crisis like we’ve never seen before. And kids around the world are stepping up to raise awareness and try to save the planet. As people saw in the youth climate strike in September 2019, kids will not stay silent about this subject—they’re going to make a change. Meet 12 young activists from around the world who are speaking out and taking action against climate change. Learn about the work they do and the challenges they face, and discover how the future of our planet starts with each and every one of us.

"Based on The magic school bus books written by Joanna Cole and illustrated by Bruce Degen"--P. facing t.p.