In 1947, when a local rancher claimed to have found a flying saucer in his field, Roswell became the center of conspiracy theories and a tourist destination for anyone in search of little green men. From the Series: Aerial America: New Mexico http://bit.ly/2yzL1G8 source

For a pilot, filing a UFO report can potentially hurt one's career. That didn't stop the captain of Aurigny Flight 544 from reporting what he saw en route to Alderney. From: UFOS DECLASSIFIED: Pilot Eyewitness http://bit.ly/1IGS0rU source

In one of his final on-camera appearances, iconic physicist Stephen Hawking issued a warning to humanity about the existential threats we face and how our survival depends on colonizing another planet. From the Series: Leaving Earth: Or How to Colonize a Planet http://bit.ly/2DqGioQ source