UFOs, chemtrails, and aliens: what science says

Science and the paranormal

The believing brain

Area 51: what is really going on in there?

The Roswell incident: what really happened?

Close encounters of the second kind: physical evidence of alien contact

Close encounters of the third kind: direct encounters with aliens

Close encounters of the fourth kind: alien abduction

The mythos of ancient aliens

Praying to aliens

Ancient myths and modern media

Cloud's illusions

Are they out there?

Why do people believe in UFOs and aliens?

The verdict.