When nuclear accidents happen, many people imagine radiation spreading everywhere and lasting forever. The reality is more ...

An undated photo from the 1980s, of two teenagers stepping on rocks and wooden planks on Coldwater Creek. The photo is from a scrapbook kept by Sandy Delcoure, who lived on Willow Creek in Florissant ...

Scientists say the areas around fracking sites have up to 40 percent more airborne radioactive particles. As an unorthodox way to extract materials, fracking has presented research challenges.

Add Yahoo as a preferred source to see more of our stories on Google. Visitors entering the Rocky Flats National Wildlife Refuge are now seeing two very different messages about safety — posted just ...

Radiation is energy that moves from one place to another in a form that can be described as waves or particles. We are exposed to radiation in our everyday life. Some of the most familiar sources of ...