Wednesday, May 21, 2008

Nanotechnology cancer risk found

The LA Times reports some disturbing news of health risks associated with nano-tech.

Certain types of carbon nanotubes -- microscopic graphite cylinders used in a small but growing number of Space Age applications -- could pose a cancer risk similar to that of asbestos if inhaled. Researchers found that mice injected with nanotubes quickly developed the same biological damage associated with early exposure to asbestos fibers, a known carcinogen. The nanotubes posed the greatest danger to workers who could inhale the dust-like particles during manufacturing. In finished products, the nanotubes are embedded in other material and thus pose less risk to consumers. Precautions (are) now in place in many factories, usually requiring workers to wear respirators.

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