Seeing real US Navy SEALs moving underwater is way cooler than any movie

This isn't a trailer for the next Tom Clancy movie. These are real U.S. Navy SEALs showing how they get into enemy territory from the sea. They get deployed in a mini-sub launched from a nuclear submarine. Then they get out as they approach the shore at night, ready to complete their mission. » 7/22/14 4:20pm Tuesday 4:20pm

10 movie trailers that were actually better than the movie

On one hand, having a movie trailer be better than a movie means you don't need to watch the movie. On the other hand, having a movie trailer be better than a movie means when you watch the movie you walk away with all-consuming disappointment. Here are 10 movie trailers that were better than the movie. » 7/22/14 3:40am Tuesday 3:40am

Carl Sagan explains why aliens are not visiting us all the time

If all the reports of UFO sightings are real, then Earth must be the most popular destination in the Universe. Obviously, that's a ridiculous anthropocentric notion, as Dr. Carl Sagan explains in the must-see 1966 CBS documentary UFO: Friend, Foe, or Fantasy hosted by Walter Cronkite. Listen to Sagan at the 51:55 mark. » 7/21/14 5:36pm Monday 5:36pm

If you fold a paper in half 103 times it'll get as thick as the Universe

The myth: You can't fold a paper in half more than eight times.* The reality: Given a paper large enough—and enough energy—you can fold it as many times as you want. The problem: If you fold it 103 times, the thickness of your paper will be larger than the observable Universe: 93 billion light-years. Seriously. » 7/19/14 3:15am Saturday 3:15am

What's hiding behind these giant holes on the Moon?

You've probably seen the mysterious giant hole that was discovered in Siberia, which appears to lead into a large cave. We don't know its origin yet, but it isn't the only hole like that on Earth. Or the Moon: NASA found these formations there too, which are perfect for future human outposts. Or current alien/Nazi UFO… » 7/17/14 7:37pm 7/17/14 7:37pm

The amazing story of a man who planted a giant forest one tree at a time

The Forest Man of India—that's his official title. Just a regular dude who, one day of 1979, decided to transform a barren land into a forest with an extension of 1,359 acres and counting. One tiny baby tree at a time, seed by seed he created a paradise that is now home for elephants, rhinos, deer, and even tigers. » 7/17/14 12:54am 7/17/14 12:54am

Spooky underwater photos reveal Nazi submarine off the coast of Texas

Robert S. Ballard and his team of ocean explorers have taken new crystal-clear photos of a Nazi submarine in the Gulf of Mexico, right off the Texas' shoreline: U-166 was one of the many Kriegsmarine U-boats that swam like sharks waiting for prey around the United States' coast. Admire it in all its decrepit glory—in… » 7/15/14 5:11pm 7/15/14 5:11pm

This is the weirdest engine I have ever seen

According to Duke Engineering, their axial engine is the most efficient and lightest engine you can put in boats, light aircrafts, and generators—the mechanical engine of the (near) future! Maybe. I don't know if their claims are true and I don't really care. I just love watching it in action in this eternal gif. » 7/15/14 12:37am 7/15/14 12:37am

How they made the most famous exploding head in internet's history

If you have been on the internet for at least a few months, you probably came across a version of the animated GIF above. You may be wondering a) where the hell does this exploding head come from or b) how the hell did they do it. The answer to a) is David Cronenberg's Scanners—and here's the answer to b: » 7/11/14 8:11pm 7/11/14 8:11pm

10 tricks that famous movie directors use as their trademark

With some directors, you can immediately tell you're watching a movie they directed just by looking at a still frame without any context. There's a visual style they stamp on their films, a certain special effect they like, a narrative preference they utilize, basically, a trademark they have. WatchMojo came up with a… » 7/10/14 8:35pm 7/10/14 8:35pm

Scientist find that 80 percent of all light in the Universe is missing

According to observations made by the Cosmic Origins Spectrograph on board the Hubble Space Telescope, the Universe is missing 80 percent of all its light. Astronomers are completely baffled: "We still don't know for sure what it is, but at least one thing we thought we knew about the present day universe isn't true." » 7/10/14 6:07pm 7/10/14 6:07pm

Astronomers discover farthest stars in the mysterious Milky Way halo

A team of astronomers led by John Bochanski has found the farthest stars in our galaxy in the mysterious Milky Way halo, a rare discovery that may change our understanding of the formation of our galactic home. They're so far away that, if you took a photo of the Milky Way from their orbit, it would look like the… » 7/10/14 10:43am 7/10/14 10:43am

This is why you should only drink water with impurities

It may sound like a good idea to drink the purest water you can find, but as this video explains, that is not actually the case. Ultra pure water has no impurities—so absolutely no taste and who wants that—but also in large quantities it will harm and even kill you because it will leach the minerals from your body. » 7/10/14 9:25am 7/10/14 9:25am

Debunking 20 common misconceptions about sex

Maybe you consider yourself a maestro in the bedroom or a lion in the sheets or think that you don't need no stinking advice about sex. But do you really know what you're doing? Do you really have all your info right? Mental Floss decides to debunk 20 common misconceptions about sex in the video below. You'll learn… » 7/09/14 11:15pm 7/09/14 11:15pm