Learn what air pollution is, how it is dangerous and which inventions can help us to reduce it. ℗Qué es la contaminación del aire? ℗Por qué es peligrosa la contaminación del aire? ℗Qué inventos pueden ayudarnos a reducir la contaminación del aire?

Discusses extreme weather conditions, what causes them, and thedangers they pose.

Describes the problems posed by fossil fuel dependence; includesinformation on such alternative energy sources as biogas, solar and wind power,and fuel cells; and provides tips for saving energy.

Wetland habitats are full of wildlife. They help control flooding and absorb greenhouse gases that are making the atmosphere of the Earth hotter. However, half the world's wetlands have been destroyed over the last one hundred years, mostly through human activity and climate change. This fascinating book uses case studies to explore the causes and effects of the destruction of our wetlands and the ways in which people can reduce their impact on these...

Some introduced species just naturally drive out native plants and animals from their environments. This captivating book acquaints readers with some of these invaders, from kudzu to Burmese pythons. Your readers will learn how experts are dealing with each ecological threat.

Looks at the problem of acid rain, examining what acid rain is, where it comes from, its negative effects, and methods that are taken to avoid its formation.

Discusses oil spills, describes the environmental problems they cause, and examines other sources of marine pollution.

"Some people are skeptical about climate change. According to many scientists, this threat to the environment is real. Readers explore the ways in which humans contribute to the problem of climate change, but they also learn how humans can work to stop this environmental crisis. Eye-catching fact boxes, a detailed glossary, and full-color photographs enhance readers' understanding of this important science curriculum topic and how it connects to current...

Millions of animals call Earth home, but many of them have become endangered or are threatened with extinction due to human activities. This title examines some of the greatest threats animals are facing today, including habitat loss, poaching, and pollution. It also looks at steps being taken to help endangered species recover, ways in which activists have contributed to conservation efforts, and how everyday people can get involved. Features include...