Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Physicists have uncovered how direct atom-atom interactions can amplify superradiance, the collective burst of light from ...

Having good neighbors can be very valuable—even in the atomic world. A team of Amsterdam physicists was able to determine an ...

A single atom of silver working in synergy with carbon and nitrogen atoms can efficiently convert polluting nitrogenous waste ...

Geoff Williams is a journalist and author. His byline has appeared in numerous publications, including U.S. News & World Report, Yahoo Finance, Entertainment Weekly, The Washington Post, LIFE magazine ...