Posthuman Blues

Gene-altered flies testify to global warming

Populations of fruit flies on three separate continents have independently evolved identical gene changes within just two decades, apparently to cope with global warming.

"What we're showing is that global warming is leaving its imprint on genes," says Raymond Huey at the University of Washington in Seattle, US, who made the discovery with colleagues. "For this to happen in such a short time-frame in so many parts of the world is rather disturbing," he says.