PARIS, France (AFP) – From Mount Everest to the Mariana Trench, microplastics are everywhere – even high in the Earth’s troposphere where wind speeds allow them to travel vast distances, a study showed Tuesday. Microplastics are tiny fragments — measuring less than 5 millimetres — that come from packaging, clothing, vehicles and other sources and have been detected on land, in water and in the air. Scientists from the French national research institute CNRS sampled […]