All that is gold is not biochemically stable

Environmental nanoparticle researchers discover that gold isn't always the shining example of a biologically stable material that it's assumed to be. In a nanoparticle form, the normally very stable, inert, noble metal actually gets dismantled by a microbe found on a Brazilian aquatic weed.

from Engineering News -- ScienceDaily https://ift.tt/2PGmFR7