Tuesday, August 26, 2008

Pollutants cause birds to sing tainted love songs

12:54 26 August 2008
NewScientist.com news service
Ewen Callaway

Traces of a chemical once used by power plants leave birds looking fit, but singing another tune altogether.

Wild chickadees exposed to permitted levels of polychlorinated biphenyls (PCBs) can't keep a tune as well as other birds.

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