Alternative Energy cover Biofuels cover Bird, Rev. ed. cover DK Guide to Mammals cover DK Guide to Savage Earth cover DK Guide to Weather cover Earthquakes and Other Natural Disasters cover Eruption! The Story of Volcanoes cover Jungle, Rev. ed. cover Pollution: Treating Environmental Toxins cover Pollution A to Z cover UXL Encyclopedia of Landforms and Other Geologic Features cover Volcano cover Waste Treatment: Reducing Global Waste cover Water cover Weather Almanac, ed. 11 cover