Former U.S. President Barack Obama has addressed persistent speculation about extraterrestrials, brushing aside claims that aliens are being concealed at the secretive Area 51 military base. In an interview with political commentator Brian Tyler Cohen, Obama responded lightheartedly when asked whether aliens exist. “They’re real, but I haven’t seen them,” he joked, before dismissing the idea that extraterrestrials are being housed at Area 51. He added that no hidden underground facility exists—unless, he quipped, there is an enormous conspiracy that kept even the president in the dark. Area 51, officially known as Groom Lake, is a classified U.S. Air Force installation in Nevada that has operated since 1955. Although long the subject of rumors, the Central Intelligence Agency (CIA) did n...