Prof Said

The Surprising Way Massive Ships Come to a Halt

Who says moldy meat can’t be eaten? There’s actually a type of meat covered in mold fibers that becomes an extremely expensive delicacy worth thousands per bite — and people willingly pay for the experience. This is known as Japanese dry-aged beef.
The white web-like strands you see are not ordinary mold that causes spoilage, but a cultivated edible fungus grown under carefully controlled temperature and humidity conditions. The mold slowly penetrates the meat, helping break down proteins and fats, which makes the meat more tender and develops a deeper flavor.
Before cooking, the outer moldy layer is trimmed away, leaving the inside dense, tender, and naturally rich with buttery and nutty flavors.

The Massive Water Shield Built Into U.S. Carriers

These Chicken Breeds Look Absolutely Unreal

The Fearless Fish Trusted by Sharks and Divers

The Reptile That Swims Through Desert Sand

Why You Should Never Stay During UV Sterilization

Why Salmon Started Swimming Twice as Far

Why Wasps Avoid Places That Look Occupied... Wasps aren’t exactly “stupid,” but they are very territorial—and you can use that to your advantage.
One clever trick is to hang a fake nest, even a 3D-printed one. Species like paper wasp tend to avoid building nests near other colonies. So when they see something that looks like an existing nest, they often assume the territory is already taken and move on.
That said, it doesn’t work 100% of the time and depends on the species and environment. It’s more effective early in the season before wasps start building. Also, proper placement (like under eaves or in attics) makes a difference.
So yes—it can work, not because wasps are “dumb,” but because they follow instinctive territorial behavior.

At first glance, it looks like the remains of some lost advanced civilization—and in a way, that’s not far from the truth.
This is a Soviet jet-powered train experiment. In the early 1970s, engineers in the Soviet Union asked a bold question: why rotate wheels when you can use jet thrust?
They took the body of a standard electric train head car from the ER22 electric train and mounted two AI-25 turbojet engine units on the roof—the same type used in the Yakovlev Yak-40.
To prevent the carriage from literally tearing itself apart at high speed, they added aerodynamic nose cones at both ends and covered the wheels with special fairings. The result was a “jet on rails” that reached speeds of around 250 km/h, which was a record at the time.
But the project was eventually abandoned. It consumed enormous amounts of fuel, was extremely noisy even by industrial standards, and the railway infrastructure simply wasn’t built for that kind of force—the engines would literally blow ballast out from under the tracks.
Still, it’s hard to deny it looked absolutely epic.