Mountaineers now scaling more peaks for first global study of nanoplastics, which can enter lungs and bloodstream

Particles from vehicle tyre wear are the biggest source of nanoplastic pollution in the high Alps, a pioneering project has revealed.

Expert mountaineers teamed up with scientists to collect contamination-free samples and are now scaling peaks to produce the first global assessment of nanoplastics, which are easily carried around the world by winds.