Microplastics have been found in 'clean rivers' for half a century – what could this mean for human health?

Caddisfly larvae have created protective structures around themselves using materials available in their environment. This shell, dating from 1986, contains blue microplastics. (Photo credit: Auke-Florian Hiemstra) Microplastic pollution from industrial emissions has plagued freshwater ecosystems for decades, with evidence suggesting…