Scientists believe this method yields far more accurate results than the cesium atomic clocks ... including this ytterbium ion optical clock at NPL. The experiment is a step toward using optical ...

Shrestha Rath is a doctoral student in the health security track at Johns Hopkins Bloomberg School of Public Health. Her research interests include biosecurity and the governance of emerging ...

The only instances of atomic weapons being used against a civilian population occurred in 1945 at the tail end of World War II. On August 6, 1945, “Little Boy” was detonated above the Japanese city of ...