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The Dark Side of Nanotechnology

I have been an ardent fan of nanotechnology and believe it has tremendous potential to advance our society. However, like many new technologies its long-term consequences on our health have not yet been adequately examined. Take the experience of researchers at DuPont, who are testing microscopic tubes of carbon, known as nanotubes, valued for their extraordinary strength and electrical conductivity. When the researchers injected nanotubes into the lungs of rats in the summer of 2002, the...