Add Yahoo as a preferred source to see more of our stories on Google. The element radium can be found in extremely tiny amounts in the Earth's crust and oceans, and in its pure form it is a soft ...

For decades, parents have warned children to stay away from dangerous objects. In 1950, however, one American company did the ...

The story of a popular health tonic that contained dangerous radioactive elements. 77 indicted as feds hunt $250M in alleged fraud Archaeologists thought they found wires buried on a farm. It was ...

The element radium can be found in extremely tiny amounts in the Earth’s crust and oceans, and in its pure form it is a soft silvery metal. To an untrained eye, a small piece of radium may look like a ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...