1. The Future of Biodiversity
2. See www.ldeo.columbia.edu/pimmlab.
3. Supplementary material is available on Science Online at www.sciencemag.org/cgi/content/full/293/5538/2207/DC1.
4. National Research Council Research Priorities in Tropical Biology (National Academy of Sciences Washington DC 1980).
5. Myers N., The Primary Source: Tropical Forests and Our Future (Norton, New York, 1992).