Las Vegas residents are likely to see a low and slow-flying helicopter over the valley on Sunday and Tuesday. The U.S. Department of Energy’s National Nuclear Security Administration will conduct ...

Over the next several days you may see a helicopter hovering over downtown Milwaukee measuring "background radiation". Officials say this is standard security protocol and there's no need to be ...

A team of researchers in the United Arab Emirates have revealed the presence of a significantly lower level of background radiation present in the nation's agricultural topsoil in comparison to the ...

SAN FRANCISCO -- Federal and local officials say a helicopter will be flying low over the Bay Area this week as part of a federal research program measuring background radiation. The helicopter, a ...

A helicopter will be flying low over the Bay Area this week as part of a federal research program measuring background radiation, according to federal and local officials. The helicopter, a ...