Researchers are sounding the alarm – there could be as much as a spoon’s worth of plastic inside our brain. Industrial activity, tire dust, lost fishing gear, and excessive use of disposable plastics are important drivers of microplastic pollution in our environment and, ultimately, in our bodies. While the full impact on human health is still being investigated, the fact that these particles can migrate into deeper tissues of our brain, crossing the blood-brain barrier, is worrying to say the least.