Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, United States United States Department of Energy, Ames Laboratory, Ames, Iowa 50011, United States ...

South Africa, the U.S., Canada, Great Britain and Spain each won 4x100m or 4x400m titles at the World Athletics Relays in Guangzhou, China. The U.S. victory came in the mixed-gender 4x400m with Chris ...

An illustration of a magnifying glass. An illustration of a magnifying glass.