The Tasmanian tiger was thought to have become extinct 80 years ago, but eyewitness reports and scientific research might indicate that the creature is on the verge of making a comeback.

The Universe

Take a tour through the "Art Gallery of the Galaxy" and view what are considered the "crown jewels" of the heavens. Nebulas are mysterious clouds of gas that aren't classified as stars, planets, moons or asteroids.

The US military has long claimed that the 1947 Roswell crash was a weather balloon, but FBI files released in 2011 include a memo regarding the recovery of not one, but three 'flying saucers'. Could the US government have UFOs in their possession?

Researcher Marc Seifer finds the smoking gun evidence proving the US military wanted Tesla’s secret files. Jason Stapleton and Travis Taylor investigate a link between Tesla’s last patent and one of the Air Force’s most advanced aircrafts.

A massive landslide chases a group of construction workers. A tornado tears through an airport and an earthquake threatens a 700-year-old church. Mother Nature continues her killing spree.

For Kevin Dykstra and his team, an 8-year quest to find a legendary boxcar at the bottom of Lake Michigan has now become a battle against nature itself.

A comprehensive look at the competing theories as to who built the pyramids and when. Does the great pyramid of Khufu hold the answers?

The team finds new evidence concerning the strange booms and menacing orange lights that panicked people in Indiana in 2008, upending theories that it was a military jet.

The Tasmanian tiger was thought to have become extinct 80 years ago, but eyewitness reports and scientific research might indicate that the creature is on the verge of making a comeback.

The Universe

Take a tour through the "Art Gallery of the Galaxy" and view what are considered the "crown jewels" of the heavens. Nebulas are mysterious clouds of gas that aren't classified as stars, planets, moons or asteroids.

The US military has long claimed that the 1947 Roswell crash was a weather balloon, but FBI files released in 2011 include a memo regarding the recovery of not one, but three 'flying saucers'. Could the US government have UFOs in their possession?

Researcher Marc Seifer finds the smoking gun evidence proving the US military wanted Tesla’s secret files. Jason Stapleton and Travis Taylor investigate a link between Tesla’s last patent and one of the Air Force’s most advanced aircrafts.

A massive landslide chases a group of construction workers. A tornado tears through an airport and an earthquake threatens a 700-year-old church. Mother Nature continues her killing spree.

For Kevin Dykstra and his team, an 8-year quest to find a legendary boxcar at the bottom of Lake Michigan has now become a battle against nature itself.

A comprehensive look at the competing theories as to who built the pyramids and when. Does the great pyramid of Khufu hold the answers?

The team finds new evidence concerning the strange booms and menacing orange lights that panicked people in Indiana in 2008, upending theories that it was a military jet.

The Tasmanian tiger was thought to have become extinct 80 years ago, but eyewitness reports and scientific research might indicate that the creature is on the verge of making a comeback.

The Universe

Take a tour through the "Art Gallery of the Galaxy" and view what are considered the "crown jewels" of the heavens. Nebulas are mysterious clouds of gas that aren't classified as stars, planets, moons or asteroids.

The US military has long claimed that the 1947 Roswell crash was a weather balloon, but FBI files released in 2011 include a memo regarding the recovery of not one, but three 'flying saucers'. Could the US government have UFOs in their possession?

Researcher Marc Seifer finds the smoking gun evidence proving the US military wanted Tesla’s secret files. Jason Stapleton and Travis Taylor investigate a link between Tesla’s last patent and one of the Air Force’s most advanced aircrafts.

A massive landslide chases a group of construction workers. A tornado tears through an airport and an earthquake threatens a 700-year-old church. Mother Nature continues her killing spree.

Intrepid host Josh Bernstein goes in search of the legendary lost City of Gold. From the peaks of the Andes to the depths of the Amazon, can he find the truth?

Investigation into a huge pulsating light spotted in the sky near Ohio in 1994. A radar operator describes what he saw, explaining he had "never seen anything move so fast".

The team go on a dangerous search in the Sea of Japan and along Australia's Great Barrier Reef to investigate reports of a jellyfish invasion that threatens to turn oceans into deadly places to swim.

The Universe

We can't compare anything on earth to the biggest things known in space. The Lymann Alpha blob is a bubble like structure containing countless galaxies–perhaps the biggest object in the entire universe.

Thousands of people from every part of the world have reported being abducted by aliens. Could the alien abduction phenomenon be true? If so, why are people being taken? And, more importantly, why are they being returned?

A century-old family's secret lures Kevin and the team back to Georgia where new finds suggest that there's more Civil War gold to be discovered.

From greed and gore to Grand Masters, we recreate this covert world of secrets and power.