Atmosphernic nanoparticles impact health, weather prof says - Texas A & M News & Information Service

Nanoparticles are atmospheric materials so small that they can’t be seen with the naked eye, but they can very visibly affect both weather patterns and human health all over the world – and not in a good way, according to a study by a team of researchers at Texas A&M University.

Researchers Lin Wang, Renyi Zhang, Alexei Khalizov, Jun Zheng, Wen Xu, Yan Ma and Vinita Lal in the Departments of Atmospheric Sciences and Chemistry say that nanoparticles appear to be growing in many parts of the world, but how they do so remains a mystery.

Popular nanoparticle causes toxicity in fish, study says - Purdue Newsroom

WEST LAFAYETTE, Ind. - A nanoparticle growing in popularity as a bactericidal agent has been shown to be toxic to fish, according to a Purdue University study.

Tested on fathead minnows – an organism often used to test the effects of toxicity on aquatic life -- nanosilver suspended in solution proved toxic and even lethal to the minnows. When the nanosilver was allowed to settle, the solution became several times less toxic but still caused malformations in the minnows.