A recent study has found the ubiquitous presence of tire-derived compounds in leafy greens samples grown in four European countries, indicating that chemicals in tires and roads are taken up by crops.

Human dietary exposure to microplastics is associated with a number of urgent health risks such as digestive, reproductive, and respiratory harm, and should be addressed with a “degree of urgency,” according to a report from the California State Policy Evidence Consortium (CalSPEC).

Flinders University researchers measured microplastics levels in South Australian mussels, and the findings indicate the probability of plastic pollution in the global food supply chain.