Polystyrene nanoparticles are widely used in packaging, but their effects on organisms are unclear. Very little was known ...

1 To investigate the effects of polystyrene nanoparticles in zebrafish, the researchers exposed fully hatched zebrafish, at 72 hours post-fertilization, to polystyrene nanoparticle solutions. The ...

This story appears in the September 2017 issue of National Geographic magazine. For a creature that’s less than one and a half inches long, the zebrafish (Danio rerio) looms large in biomedical ...