Alternative Energy, ed. 2 cover Alternative Energy cover Climate Change cover Climate Change: In Context cover DK Guide to Mammals cover DK Guide to Savage Earth cover DK Guide to Weather cover Encyclopedia of Environment and Society cover Encyclopedia of Environmental Ethics and Philosophy cover Encyclopedia of Global Warming and Climate Change cover Endangered Species, ed. 2 cover Environmental Encyclopedia, ed. 3 cover Environmental Encyclopedia, ed. 4 cover Environmental Issues: Essential Primary Sources cover Environmental Science: In Context cover Global Warming 101 cover Grzimeks Animal Life Encyclopedia: Evolution cover Grzimeks Animal Life Encyclopedia, ed. 2 cover Grzimeks Animal Life Encyclopedia: Extinction cover Grzimeks Student Animal Life Resource cover Ocean cover Pollution A to Z cover UXL Encyclopedia of Biomes cover UXL Encyclopedia of Biomes, ed. 2 cover UXL Encyclopedia of Landforms and Other Geologic Features cover UXL Encyclopedia of Water Science cover UXL Encyclopedia of Weather and Natural Disasters, ed. 2 cover UXL Encyclopedia of Weather and Natural Disasters cover Water: Science and Issues cover Weather Almanac, ed. 11 cover