Radioactive materials are found naturally in the Earth. But even so, saying an area is radioactive may conjure up images of things you find in a sci-fi films including green glowing men and the odd ...

Add Yahoo as a preferred source to see more of our stories on Google. When most of us think of radioactivity, we picture abandoned nuclear test sites or disaster zones like Chernobyl. But the ...

Radiation is all around us. If you’ve been on a plane or had an X-ray at the dentist, you’ve been exposed to tiny amounts of radiation. The radiation you’d receive by taking a 5.5-hour flight from New ...