A DVD Companion to Lights In the Sky & Little Green Men

While the vast majority of UFO sightings have natural causes, a residual number seem to defy explanation. What are these "residual" UFOs? Stand to Reason President Greg Koukl leads a discussion with Reasons To Believe scholars Hugh Ross (astronomer), Kenneth Samples (philosopher-theologian), and Mark Clark (national security expert) examining popular UFO theories and developing their own explanatory hypothesis.