Plastics are now so common in the ocean that they've been found deep in the Arctic far from where humans live. And the problem isn't just that plastic never really goes away (it just breaks down into smaller and smaller pieces). Plastic waste is also a magnet for a host of other environmental pollutants, including polychlorinated biphenyls (PCBs) and dioxins. These plastics are consumed by confused fish, at which point the chemicals also become a persistent part of the food chain. In fact, bits of plastic occasionally even show up in beer. In 2014, Illinois became the first state to ban plastic microbeads, and California followed suit in 2015. In December of the same year, President Obama signed a nationwide ban, though its scope does allow for their continued use in a wide array of products.