A new brain scan tool shows how quickly your body and mind are aging. It can spot early signs of diseases like dementia, long ...

A scientist has warned that Earth's rotation is unexpectedly accelerating, leading to the shortest day in history. Graham ...

Chief Justice John Roberts often laments that he has limited clout as he deals with his eight Supreme Court colleagues. “You can’t fire people if they don’t follow you. You can’t cut their pay,” he ...