Chilean Greenpeace activists dramatize the possible effects on humans
of PCBs, a chemical used in manufacturing that is harmful to human
health and the environment in front of the Santiago subway office, in
Santiago, September 26, 2003. Greenpeace targeted its protest against
the Santiago subway operator, which it says uses large amounts of PCBs
in transformers located in some of its stations. REUTERS/Carlos Barria
REUTERS

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