【 以下文字转载自 Circuit 讨论区 】
发信人: CoreService (CoreService), 信区: Circuit
标  题: An Immortal Poison -- the history of PCBs, an excerpt
发信站: 水木社区 (Sun May 20 21:11:17 2018), 站内



An Immortal Poison -- the history of PCBs, an excerpt



https://www.youtube.com/watch?v=NKiIM6WJZfQ




Unlike any other substance, PCB has demonstrated that once chemicals are released into the environment, they remain there for generations.
When PCBs were first introduced in the 1920s, they were considered invaluable in electrical equipment, in buildings and in machinery.
The chemicals are practically invisible and not something ordinary people come into contact with.
But a mere a few generations later, PCBs have imperceptibly spread all over the world, and are now to be found in both animals and human organism -- as well as in foodstuffs.
When in the 1970s it first became evident that PCBs are a health hazard, they are banned by most the developed countries. PCBs don't simply disappear, on the contrary - they continue to do harm to this very day.
The documentary is part of the international awarded series "Late Lessons from Early Warnings" which explores  how we have been able to respond to warnings about the hazards posed by some of the greatest technological innovations of the last century.
We have not always been that successful.
Directed and produced by Jakob Gottshau, Express TV Production
Photography: Michael Daugaard
Film Editing: Jesper Osmund
Music: Niels Mosumgaard
Narration: Brian Patterson
Year of Production: 2006
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