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Google Maps users claim to have stumbled upon a potential hidden Nazi bunker after spotting what appears to be a mysterious door concealed in Antarctica. The sighting has reignited the popular internet conspiracy theory that suggests surviving Nazis sought refuge in a military base on the icy continent following World War II. The discovery of this "door" was initially shared by an observant Facebook user on July 30 and quickly went viral. The image reveals a shadowy square-shaped mark resembling a hidden entrance on the eastern side of the vast ice sheet. Conspiracy theorists have since speculated on the purpose...

Intelligence agencies in the U.S. have spent the last few years analyzing footage of hundreds of recent UFO encounters, and they want the American people to know: It's still not aliens. According to several U.S. Department of Defense (DoD) officials who spoke anonymously to The New York Times last week, many recent sightings of UFOs — or unidentified aerial phenomena (UAPs), as the government prefers to call them — are likely just observations of foreign surveillance operations or airborne clutter, such as weather balloons. Several UAP incidents have been officially identified as "relatively ordinary" Chinese surveillance drones, the anonymous officials...

The Blue horizontal lines are parallelWhile I can prove this very easily My lying eyes keep telling me otherwise.

This optical illusion can reveal if you have a female or male brain depending on what you see first. The riveting image of the running man claims it can decipher what kind of thought process people have – and what you see first may mean you struggle to multitask. The simplistic picture shows a dark figure posied in a sprinting pose – but do you see him running towards or away from you

The concept of time travel has always captured the imagination of physicists and laypersons alike. But is it really possible? Of course it is. We're doing it right now, aren't we? We are all traveling into the future one second at a time. But that was not what you were thinking. Can we travel much further into the future? Absolutely. If we could travel close to the speed of light, or in the proximity of a black hole, time would slow down enabling us to travel arbitrarily far into the future. The really interesting question is whether we can travel...

Two roads diverged — and confused the internet (again). In a sequel to that blue-and-black-or-white-and-gold-dress and those green strawberries, another optical illusion is confusing the internet, and this time, not on color. This week, a Redditor shared a photo of what appears to be a road taken from two different perspectives. Big deal, right? Except the images are actually one and the same. The post shows two images of a street side-by-side. The one on the right, however, appears to slant more towards the right. That’s problematic, because if you overlay the images with each other, it’s easy to see...

The truth is all the lines represented in the image are curvy, but if you’re like most people, you should see alternating rows of straight and wavy lines. Though it’s somewhat unclear how it works, scientists think it’s caused by the brain using different mechanisms to identify curved and angular shapes. These mechanisms may interfere or compete with each other, producing this strange effect.

A mysterious, pale green figure seen in televised news coverage of the Egyptian riots has prompted some viewers to ask, "Could this be the Fourth Horseman of the Apocalypse?"