The story of asbestos in this country ought to serve as a cautionary tale: A seemingly miraculous fiber was widely introduced into common consumer products; only after it was already in millions of homes did the general public realize that it causes a particularly terrible form of cancer. Now, treating victims and cleaning up contaminated communities is costing billions of dollars, and thousands of people endure the toll of a debilitating and deadly disease. Nanotechnology is another innovation that promises to bring consumer products to a whole new level -- and, once again, it looks like nano products will become …
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