Johanna-Iisebel Järvelill - Are Estonian Beaches Radioactive?
https://www.youtube.com/embed/5MXSK0xcB-A
The term radioactivity usually brings to mind man-made sources of radiation, such as the X-ray or various catastrophes, for example Chernobyl. In reality, we are surrounded by natural radioactive background, such as the radiation that reaches us from Space, or radon that lies in the earth. Even the sand at the beach can be radioactive, says Johanna-Iisebel Järvelill, a PhD student at Tallinn University.