What on Earth?WW

What on Earth?

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What Caused These Scratches at the Bottom of the Sea?

Some of these scratches are 10 or more meters long.

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When a perfect triangle is found in the middle of a unpopulated portion of Australia, experts begin to wonder whether or not the design is man made.WWW

03:57

What on Earth?W

Strange Australian Triangle

Satellite photos show a strange circle beneath the ice of an ancient lake. Further analysis shows that these mysterious rings appear each year. What are they?WWW

03:58

What on Earth?W

Intriguing Ice Circle

A satellite captures an image that uncovers the entrance to an underground complex. What is being built there?WWW

04:32

What on Earth?W

Chinese Underground Lair

Scientists are baffled when a seemingly huge tsunami headed straight for Hong Kong suddenly disappears in the water.WWW

04:02

What on Earth?W

Huge Tsunami or Marine Weapon?

Sandy Island seems to have disappeared, and scientists aren't quite sure why. Was there some sort of elaborate government experiment?WWW

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What on Earth?W

Satellite images capture a distinct glowing object beneath the ocean's surface.WWW

03:18

What on Earth?W

Mysterious Underwater Glow

Satellite images reveal a strange hole in Antarctica. After scientists rule out whirlpools and sinkholes, they have to look back in time to find the answer.WWW

02:55

What on Earth?W

Ghost Lakes in Antarctica

A commercial satellite imager spots something strange in the middle of a vast desert. It looks like an airport runway, but there are no planes. No government claims ownership of this strange place.WWW

03:01

What on Earth?W

Secret Drone Hangar Discovered in Saudi Arabia

Satellite images reveal enormous spirals in Peru. Some researchers say they are too perfect and too huge to be man made.WWW

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What on Earth?W

Strange Spirals in Peru

Ghost lakes have existed for millions of years, but they just recently started showing themselves. Geophysicist Helen Fricker explains how scientists are moving forward with this discovery.WWW

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What on Earth?W

Discovering Ghost Lakes

For years the hottest place on Earth ever recorded was a city in Libya. When researchers took a second look at this information, they realized the measurement was wrong.WWW

01:27

What on Earth?W

The Hottest Place on Earth

When you think of deserts, you don't typically think of bright, jewel tones. Why are these massive pools of color here?WWW

02:04

What on Earth?W

Why is this Desert so Colorful?

Who drew this over 2 mile long humanoid figure into the Australian terrain?WWW

02:12

What on Earth?W

This Humanoid Drawing can be Seen From Space

Satellite images revealed hundreds of black holes in the middle of the desert near ancient burial grounds. Is grave robbing still a thing in modern day or were these holes caused by something else?WWW

00:46

What on Earth?W

Black Holes in Egypt

Satellites spotted a strange, long streak across the desert in Bolivia. At first, scientists thought it may be a skid mark from a meteor.WWW

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What on Earth?W

Train Graveyard in Bolivia

This isn’t an optical illusion. This lake on Middle Island is actually pink! You can thank the algae in the lake for the gorgeous color.WWW

03:12

What on Earth?W

This Lake is Bright Pink

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13-year-old William Gadoury is like a young Indiana Jones.WWW

00:36

What on Earth?W

A 13 Year Old Discovered an Ancient Maya City

Located in Argentina, this huge design was picked up in satellite images. Some people initially thought it was a golf course. Problem is there’s too many holes.WWW

02:42

What on Earth?W

What Is This Giant Geometric Shape in South America?

Thanks to GPS, they know what land is theirs.. even down to the inch.WWW

03:04

What on Earth?W

This Tribe is Using Tech to Protect Their Land

Even stranger, it disappeared less than a year later.WWW

00:37

What on Earth?W

This Island Appeared Overnight

Southeast of Mexico City, hundreds goats are found dead and completely drained of blood. Is this the work of the legendary chupacabra?WWW

04:28

Unexplained FilesW

Mystery of the Mexican Chupacabra

Horses and cattle have been found dead around the world. The animals are found to be drained of blood, with their organs surgically removed. Investigators are stumped as to what could be responsible.WWW

03:37

Unexplained FilesW

Gruesome Livestock Mutilations

A fireball in the sky over Sri Lanka in 2012 is followed days later by a mysterious downpour of red rain. During the search for a rational explanation, investigators find evidence of strange living cells with no earthly comparison.WWW

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Unexplained FilesW

On March 24, 1967, men see an unidentified object hovering over Montana’s Malmstrom Air Force Base, home to nuclear weapons, which are all disabled simultaneously.WWW

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Unexplained FilesW

UFO Meets Missiles at Malmstrom Air Force Base

Bizarre, hairless, blue-eyed and hunch-backed creatures have invaded Texas, attacking and mutilating livestock. Now there is evidence they are breeding and their population is set to explode. Scientists are mystified, the authorities are in denia ...WWW

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Unexplained FilesW

Texas Blue Dogs

Mysterious phenomena and bizarre sightings seems to follow one distinct geographic line across America: a paranormal highway.WWW

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Unexplained FilesW

The 37th Parallel

Hear from Director Sean Smith and go behind the filming of Fred Valentich's story - the pilot who mysteriously vanished along with his plane over Australia in 1978.WWW

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Unexplained FilesW

Behind the Scenes: Vanishing Pilot

Pilot Fred Valentich's last words were "its above me and its not an aircraft." Then a mysterious metallic sounded through the radio just before the pilot and his plane vanished without a trace. Is this evidence of UFO contact?WWW

02:07

Unexplained FilesW

An Alien Abduction?

A strange dog-like predator has been spotted in Texas and believed to be responsible for slaughtering livestock and draining the corpses of blood. Could it be related to the chupucabra?WWW

02:12

Unexplained FilesW

A Chupacabra Cousin?

Why would sailors mysteriously vanish from a boat, leaving behind all of their equipment with no signs of struggle?WWW

02:33

Unexplained FilesW

Sailors Missing Without a Trace

Area 51 in Nevada is America's most secret air base. State-of-the-art aircraft have been developed here for decades, but does it also hold clues to UFOs?WWW

04:27

Unexplained FilesW

The Mystery of Area 51

Northern Europe's Baltic Sea is one of the most dangerous seas on Earth and hides a thousand wrecks on its bottom. One massive finding under its surface isn't like the others, however.WWW

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Unexplained FilesW