Presents a huge wealth of information gathered from the conservation community worldwide. Begins by outlining material & energy cycles in the biosphere before developing the themes of the historical change in biodiversity, the relationships between humankind & the environment, & current trends in biodiversity, ecosystems & species depletion. Illustrated 37 thematic maps, 25 figures, 49 tables & 33 color photographs. This authoritative work was published in association with the United Nations Environment Programme, to coincide with the World Summit on Sustainable Development in 2002.