But only in the last 70 years have we known for certain they were there. In 1956, physicists Clyde Cowan and Frederick Reines ...

Add Yahoo as a preferred source to see more of our stories on Google. A dangerous fragment of radioactive debris was found outside of a decommissioned nuclear facility in Scotland. The BBC reported ...

Over seven decades of nuclear weapons testing have left a toll that can no longer be dismissed as an abstract risk. A new ...

A fragment of waste found near Dounreay in April was the most radioactive to be detected in the last three years, the Highland nuclear site's operator has said. Sand-sized particles of irradiated ...

After a series of attacks on Iran made by Israel, and a number of retaliation attacks from Iran, the U.S. intervened on June 21. The U.S. completed military strikes on three Iranian nuclear sites, ...

One expert says explosive nuclear testing would be 'alarming.' President Donald Trump announced on Wednesday that he is ordering the United States to resume nuclear testing, leaving experts wondering ...

Earth just experienced a rare S4 solar radiation storm, the most intense since 2003 — powerful for satellites and astronauts, ...