Negative Externalities

New perils of new technologies.

Nanotechnology Regulation Needed, Critics Say: "And a California team working with
laboratory-grown cells showed that carbon nanotubes specifically activate 'cell suicide genes.'
'Cell growth was retarded, and there was a doubling of cell deaths,' said study leader Fanqing Frank Chen of Lawrence Berkeley National Laboratory. Chen said factory exposures should be 'a big concern,' and added that many nanospheres are very stable and not likely to break down in the environment."