New technology needed to monitor rain forest 'tsunami'

Human impact on tropical forest ecosystems has reached a "tsunami" stage, say scientists, and will require a new generation of sophisticated remote-sensing technology to monitor the changes. Speaking at a January 12, 2009 symposium "Will the Rainforests Survive? New Threats and Realities in the Tropical Extinction Crisis*," hosted by the Smithsonian Institution, Gregory Asner of the Carnegie Institution's Department of Global Ecology presents new estimates of the global human impact on rain forests, including not only deforestation but also the extent of selective logging and forest regeneration.

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