Which is kind of what I'm getting at. I've read that we have the equivalent to as much as a crayons worth of micro plastics in our brain. A crayon, while not particularly scientific, puts a pretty fine point on the issue in an intuitive sense, and also addresses the cumulative nature of the pollution. By the head line it seems like they are only talking about a certain sized micro plastic, and without further context they might as well just say "a lot".