Nanoplastics – an underestimated problem?
The images leave no one cold: giant vortices of floating plastic trash in the world's oceans with sometimes devastating consequences for their inhabitants – the sobering legacy of our modern lifestyle. Weathering and degradation processes produce countless tiny particles that can now be detected in virtually all ecosystems. But how dangerous are the smallest of them, so-called nanoplastics? Are they a ticking time bomb, as alarming media reports suggest? In the latest issue of the journal Nature Nanotechnology, a team from Empa and ETH Zurich examines the state of current knowledge – or lack thereof – and points out how these important questions should be addressed.