Clean air is important for life on Earth. In the past few hundred years, the quality of air in Earth's atmosphere has become a problem. Toxic chemicals, gases, and smoke particles from factories and cars pollute the air. This is called air pollution. Find out more in Air Pollution, a title in the Take the Sky series. The books in this series are designed to inspire young readers by introducing core concepts in the study of sky science.

"One of the ways disease spreads in developing countries is through polluted water. This topic is a serious one for young readers to understand. In this book, the issues of pollution are explained in age-appropriate detail, complete with full-color photographs of air, land, and water pollution. In addition, each engaging topic concludes with a helpful flowchart to review how acid rain works, how bacteria enter drinking water, and the ways algal blooms...

"Even though the Earth seems big and unchangeable, humans have altered its climate, creating consequences for all life. By working together, humans can save the planet, and ourselves" -- Earth spins through eons of time, and than one day humans arrive and they change the planet--and it continues to change today though not in a good way, but by working together we can save it, and ourselves.

"Many of the things we throw away end up in landfills. Some of it winds up in our forests and waterways. As landfills pile high and pollution trashes our planet, Earth is in danger. Learn how the little things can add up to reduce waste and save the world. Fun illustrations, exciting photos, and encouraging text make having an impact easy!"--

"Una historia real sobre un científico contemporáneo que salvó la capa de ozono y el planeta, evitando un desastre en el medioambiente. Mario Molina es un científico mexicoamericano y un héroe de nuestros días que ayudó a resolver la crisis de la capa de ozono de la década de 1980. Se crió en la Ciudad de México y desde niño sintió curiosidad por los mundos ocultos que estudiaba a través de un microscopio. De joven, ya viviendo en California,...

"No doubt about it, water is pretty important! And all living things on Earth--from big blue whales to teeny-tiny bacteria--need water. But our world is currently facing some serious water problems: drinkable water isn't easily accessible to everyone, the demands for water around the globe are increasing but the supply is limited, and some human actions are causing disastrous ripple effects downstream for ecosystems and the animals that live in them....