It's called "Anthropocene" because microplastic is the material that best defines our mark on the planet, worthy of a new name for this time period.  Plastics are ubiquitous in all environments: land, sea and air. If flows through our lives, our food and water, and our bodies.  As this microplastic settles to ground, it joins the sedimentary layers recording the geologic history of our planet. The fossil record will mark our existence not with our bones, but a layer of trash.