Microplastics have infiltrated every part of the planet. One study estimated that there are around 24.4 trillion fragments of microplastics in the upper regions of the world's oceans. But they aren't just ubiquitous in water " they are spread widely in soils on land too and can even end up in the food we eat. Unwittingly, we may be consuming tiny fragments of plastic with almost every bite we take. In 2022, analysis by the Environmental Working Group, an environmental non-profit, found that sewage sludge has contaminated almost 20 million acres (80,937sq km) of US cropland with per- and polyfluoroalkyl substances (PFAS), often called "forever chemicals", which are commonly found in plastic products and do not break down under normal environmental conditions. Sludge is commonly used as organic fertiliser in the US and Europe. Due to this practice ... between 31,000 and 42,000 tonnes of microplastics, or 86 trillion to 710 trillion microplastic particles, contaminate European farmland each year. Plastic particles can also contaminate food crops directly. A 2020 study found microplastics and nanoplastics in fruit and vegetables sold by supermarkets and in produce sold by local sellers. Crops absorb nanoplastic particles from surrounding water and soil through tiny cracks in their roots. Chemicals found in plastic have been linked to cancer, heart disease and poor fetal development. High levels of ingested microplastics may also cause cell damage which could lead to inflammation and allergic reactions.