The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

A new atomic clock at the National Institute of Standards and Technology in Boulder is helping researchers count seconds to ...

From space, the Atomic Clock Ensemble in Space will link to some of the most accurate clocks on Earth to create a ...

The administration expects nuclear reactors to be tested and deployed within the president’s term.

John P. Holdren is a research professor at Harvard University’s Kennedy School of Government and the co-director of the Science, Technology, and Public Policy Program in the School’s Belfer Center for ...