In 1994, over 60 children at a Zimbabwe school claimed to have seen aliens. Years later, witnesses maintain their accounts, while others are skeptical.

A close encounter at a children's school in a tiny Welsh village spurs a series of sightings. An astrophysicist theorizes about aliens and water.

After the 2011 Fukushima nuclear disaster, survivors reported seeing bright lights above the power plant. For some, the event upholds a long-held belief.