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In the first study of its kind, researchers in a range of habitats including northern Britain, the wet tropics of northeastern Australia and the Mexican desert said yesterday that global warming at currently predicted rates will drive 15 to 37 percent of living species toward extinction by mid-century.
Dismayed by their results, the researchers called for "rapid implementation of technologies" to reduce emissions of greenhouse gases and warned that the scale of extinctions could climb much higher because of mutually reinforcing interactions between climate change and habitat destruction caused by agriculture, invasive species and other factors.
"The midrange estimate is that 24 percent of plants and animals will be committed to extinction by 2050," said ecologist Chris Thomas of Britain's University of Leeds. "We're not talking about the occasional extinction -- we're talking about 1.25 million species. It's a massive number."
http://www.washingtonpost.com/wp-dyn/articles/A63153-2004Jan7.html