Deep in the heart of Australia's Northern Territory is a small research station, surrounded by an array of seismometers and infrasound sensors. The Warramunga site is one of 300 facilities around the ...

Add Yahoo as a preferred source to see more of our stories on Google. Resuming full testing of nuclear weapons — as President Donald Trump called for last week — would be unnecessary, costly, ...

"We've halted many years ago, but with others doing testing I think it's appropriate to do so," the president told reporters aboard Air Force One. Experts say that the resumption of testing would be a ...

Clarity is key on most issues relating to nuclear weapons, and testing them is no exception. America’s adversaries are carrying out low-level nuclear tests and gaining an advantage over the United ...