As our awareness of the effects of human activity on our planet's resources grows, a thorough understanding of environmental science becomes crucial. The HarperCollins Dictionary of Environmental Science is a comprehensive sourcebook and reference tool for students, professionals, and anyone interested in this increasingly important field. From zoology to nuclear power, the dictionary's more than 2,000 entries provide clear, up-to-date definitions and encyclopedic information on all the major topics of environmental science. In addition, diagrams and charts illustrate such concepts as radio-carbon dating, trophic level, plate tectonics, and more. The HarperCollins Dictionary of Environmental Science is a complete and thorough guide that will prove indispensable to the environmentally aware.