The world’s filled with radiation. It’s unavoidable. But at higher altitudes—say, in an airplane—you’re hit with around 100 times more cosmic radiation from space. You can’t dodge it, but you can ...

If you wonder how the radiation from MRIs, X-rays and CT scans measures up against exposure to Chernobyl, an Avon-based company has the answer. National Imaging Associates, a subsidiary of Avon-based ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...