
What on Earth?
Possible treasure in the Grand Canyon from a bandit; investigating desert ruins.

Possible treasure in the Grand Canyon from a bandit; investigating desert ruins.

A strange structure in Mongolia; bizarre rings in Spain could lead to the lost city of Atlantis.

A photo that claims to show who shot down a passenger jet in Ukraine.

A satellite finds a set of large arrows in the badlands of the American west.

Satellites locates strange spiral markings in the remote African desert.

Satellites find American stealth technology; something large is lurking beneath Loch Ness.

A fleet of large ships stranded in the middle of a vast desert.

A look at whether the desire for gold is the result of extraterrestrial landings in the past.

New evidence and modern-day UFO sightings have experts rethinking Native American myths.

Evidence suggests contact with aliens may have influenced humankind and many of its sacred sites.

The Royal Air Force regularly encounters UFOs, but the British government denies the sightings.

The U.S. government continues to deny the existence of extraterrestrials.

Investigators reveal the secret history of U.S. presidents and UFOs.

An exploration into whether breakthroughs are the result of human efforts or contact with UFOs.

There are landmark cases of alien abduction that scholars struggle to refute.

Researchers investigate what really happened during encounters between police and UFOs.

Evidence reveals the development of Nazi weapons not long after an alleged UFO crash.

UFO sightings by pilot and astronaut experts are far more common than we're lead to believe.

Investigating whether deathbed confessions provide real evidence of the existence of UFOs.

New evidence pointing to the possibility that ancient man was visited by extraterrestrials.