People throughout the Canadian province of Ontario awoke Sunday to a cellphone alert warning them of an “incident” at a nuclear plant just east of Toronto — only to later be told the message was a ...

Add Yahoo as a preferred source to see more of our stories on Google. From the Department of Homeland Security came notice in the United States of a "heightened threat environment." Hours later, the ...

The United States went on high alert on June 22 over concerns of retaliation from Tehran after the bombing of three Iran nuclear sites a day earlier. Major U.S. cities from New York to Los Angeles ...

People throughout the Canadian province of Ontario awoke to an emergency alert warning of an “incident” at a nuclear plant near Toronto, only to be told later that the message was a mistake. The ...

Editor's Note: This page is a summary of news on the U.S. strikes on Iran's nuclear sites for Sunday, June 22. For the latest news, view our story for Monday, June 23. Major U.S. cities from New York ...