A more optimistic vision

In this context of uncertainty, Marc Wiesner (Duke University) notes that the methods used for the production of nanomaterials have often become greener during their passage from the laboratory to the site of industrial production. Their use could turn out to be relatively less toxic than the classic chemistry because of the reduction in the use of solvents and the level of waste production.

The “safer by design” approach is presented as a “nano” risk assessment alternative provided until now but based on currents scientific knowledge, it's not possible to ensure that this approach may constitute an absolute guarantee against nanomaterial risks.