Give your students, librarians, and teachers accurate and reliable information on climate change with Earth's Changing Environment. Written for ages 10 to 17, this comprehensive look at the environment focuses on climate, greehouse effect, global warming, and the Kyoto Protocol while exploring the delicate web of life with articles on ecology, biogeography, biodiversity, endangered species, deforestation and desertification. The effects fo environmental...

World Exploration from Ancient Times cover the challenges and excitement of expeditions and settlements as explorers raced to discover the world. Meet the brave people who set out to find new places and read about their experiences in their own words.

Are you up to date on the solar system?  When the International Astronomical Union redefined the term "planet," Pluto was downgraded to a lower status. New Views of the Solar System 2013 looks at scientists' changing perspectives, with articles on Pluto, the eight chief planets, and dwarf planets, new missions, updates for ongoing missions, newly-discovered moons, and updated tables. Brilliant photos and drawings showcase the planets, asteroids,...