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Should we be afraid ?

Are we overdoing it?
Men have always lived in an atmosphere loaded with natural or anthropic nanoparticles and every liter of air contains several millions of nanoparticles. Yet some clues encourage prudence. Legitimate fear or phobia? We can wonder. See http://www.cnrs.fr/cw/dossiers/dosnano/.

Preventing is better than healing

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Direct or indirect exposures and cycle of life.

The forecast growth of nanopowders production due to the development of nanotechnology is accompanied by a question about the potential dangerousness for personnel exposed and for the population in distinguishing the direct exposure of a "user" of nanoproducts but also indirect exposure for all citizens in case of accident or poor waste management.