Radioactivity of common items demo

The BBC’s Dr. Yan puts on a little quiz show in Covent Garden Market, London for passers by. We find out just how much the average shopper knows about radiation. People are often surprised when they find out that many everyday objects are radioactive – including food!

The Brazil Nuts he tests here are radioactive but not from radium – the ones from Brazil are. This is due to the extensive root system of the Brazil Nut tree and the fact that there is Uranium in the soil in the Brazilian rainforest.