A congressional probe launched this week into the string of missing scientists was sparked by the disappearance of a former high-ranking official who oversaw some of the military’s most classified res...

A nuclear physicist and MIT professor fatally shot outside his Massachusetts residence. A retired Air Force general missing from his New Mexico home. An aerospace engineer who disappeared during a hik...

“Once you see the facts, it would suggest that something sinister could be happening and it would be a national security concern,” Comer said, adding he and Burlison were looking to “see if we can put...