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Alien invasion? See the definitive news report on intelligent life in the universe

11:25

Is there other intelligent life in the universe? A new Pentagon report is sparking new intrigue, but it only scratches the surface. In this special report, MSNBC journalist Ari Melber traces the history of UFO sightings; the clash between empiricism and government secrecy; and how the advance of cell phone cameras and video technology is reshaping the search for intelligent life -- with evidence that cuts both ways. (This report is one part of wider coverage that included reaction from Astrophysicist Neil DeGrasse Tyson and the former CIA Director John Brennan.)