Eco friendly dosimeters.

Today I learned that a dosimeter to measure radiation can be made out of used PET bottles. It's a much cheaper and eco friendly way to make a dosimeter and simple ones are going to be made for school kids..much like the dosimeters that those in the nuclear workplace carry around with them at all times to measure their own exposure. Nice. And practical since there is a backlog on dosimeter orders here and everywhere is sold out.