In space, metal sticks together

If you put two pieces of metal together in space, they will stick together. This process is called cold welding. Atoms on the surface of metals don't "feel" the difference between their metal and their neighbor. And they form similar bonds with them.

On Earth, this is prevented by oxygen, which is found in almost every corner of our planet. And oxidation prevents them from sticking together.

Astronauts, who bring instruments from Earth, are not afraid of "sticking" anyway. After all, every instrument retains an oxide layer. Any additional layer, be it gas or dirt, prevents sticking.

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In Norway, they make a special cheese called brunust, which has a brown color and a sweet taste. To make this cheese, whey from goat or cow's milk is boiled together with cream for several hours. The sugar from the milk turns into caramel, which gives the cheese a sweetish taste.

World of Knowledge

An ant cannot die from a fall.
Because of their incredibly light weight, rugged exoskeleton, and sail - the finite fall speed developed by the ant is not enough to kill or injure it on impact.
Simply put, they could survive being dropped from a height of 400 meters and escape unharmed.

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High-speed train 🚅

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🐕 Besenji.

This is the only dog breed that can't bark.

Dogs of this breed do not smell and often wash their paws like cats.

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To understand why penguins don't fly, it's enough to see them in the water.

They mainly eat fish and mollusks - and when hunting them, they show themselves as talented sailors and divers. Their short wings become elastic fins, their plump body - streamlined, like a torpedo, and funny legs and tail - an excellent rudder. The penguins can easily dive to depths of up to 250 meters and can reach speeds of up to 10 m/c, or 36 km/h in the water!

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Today chewing gums all over the world are made according to a single recipe: 20% is rubber, 60% - sugar (or its substitutes), 19% - corn syrup and 1% - flavorings.

Manufacturers add different flavors in order to get new flavors that competitors do not have.

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Children who are constantly exposed to computers learn math much faster and learn to write and read five times faster.

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In Sicily, the oldest and thickest chestnut tree in the world grows. It is listed in the Guinness Book with a trunk circumference of 57.9 m and its age is between 2000 and 4000 years.

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Bryndza is high in B vitamins, vitamin A, vitamin D, calcium, phosphorus, and zinc. Compared to other types of cheese, bryndza has relatively little fat.

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The Faroe Islands are an autonomous region within the Kingdom of Denmark.

The archipelago consists of 18 islands of volcanic origin located in the northern Atlantic Ocean between Iceland and Norway.

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This hot ice is a chemical derived from vinegar and soda, sodium acetate.

When the solution crystallizes, it heats up, which is why it gets its name.

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Study: sex reduces the risk of death if practiced at least once a month.

Scientists have found that making love reduces stress levels, as well as the risk of death from prostate cancer, type 2 diabetes and heart disease. It also applies to people with hypertension.

Studies have shown that men with a high libido live longer than those whose sex drive is below average.

EARLIEST OF ALL

There are no mosquitoes in Iceland. Iceland is a country that experiences dramatic (and rapid) weather changes. Because of this, mosquitoes do not have enough time to complete their life cycle, and they die in these harsh conditions.

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There is a prison in Brazil where for every book you read your sentence is reduced by four days

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You can see pilots with lush mustaches and beards only in films. In reality, pilots are strictly forbidden to grow stubble longer than 1 cm. The ban is due to the fact that facial hair prevents the oxygen masks from adhering to the face, which puts everyone on board in mortal danger.

World of Knowledge

Arizona (USA) has a terrible heat wave of 50 degrees.

Cars' headlights melt, and the asphalt gets so hot that you can fry scrambled eggs. In order to save animals from paw burns, Americans are inventing "shoes" for them.

Planet on Fire 🔥