Ever shared someone else’s toothbrush? I didn’t think so. I certainly haven’t, and yet there are some things that we’re perfectly willing to share, like a pen or perhaps a jacket. These unwritten ...

These rules are designed to limit unnecessary radiation exposures and contamination of the facilities and equipment and to minimize the consequences of a radiation accident if it should occur. Copies ...

A long-awaited new policy broadens the type of regulated viruses, bacteria, fungi and toxins, including those that could threaten crops and livestock. By Carl Zimmer and Benjamin Mueller The White ...