Bedtime is a time to relax, so if you've already taken a shower and are lying in bed, why not spend ten minutes learning some interesting facts?

Sharks do not make sounds. Among the 400-500 species of sharks, no one has yet been found to have an organ capable of producing sound.

"Foldit" is a puzzle game about protein folding. In 2011, its players helped decipher a protein of an HIV-like virus, solving a 15-year-old scientific problem in just 10 days.

In Singapore, elderly pedestrians have more time to cross the street at traffic lights. By attaching a discount card to the crosswalk button, the green light stays on for an extra 13 seconds.

In 2001, Mattel manufactured a vibrating Harry Potter broom, which led to many Amazon users questioning the product's quality. Mattel ceased production of the toy after it began selling for double the original retail price in adult stores in Times Square.

When the Bible was first translated into Finnish, the word for lion was not used because no one had ever seen a lion. The translator used the word "jalopeura," which means "noble deer."

People with androgen insensitivity syndrome do not respond to testosterone, so they have male genetic makeup but exhibit female physical characteristics.

The morning after the Titanic sank, a man on a nearby ship, unaware of the sinking, photographed an iceberg and suspected a red stripe on it was paint from one of the ships. For years, the law firm of the Titanic's owner, White Star Line, has displayed the original in their office.

When Zlatan Ibrahimovic signed with the Los Angeles Galaxy, LeBron James gave him one of his Lakers jerseys as a "Welcome to Los Angeles" gift. Ibrahimovic responded by signing it and sending it back.

Throughout Jerusalem's long history, it has been destroyed twice, besieged 23 times, attacked 52 times, and captured and recaptured 44 times.

Many animals do nothing most of the time, even those we consider particularly busy. "If you observe a group of ants, bees, or any truly social insect, you'll probably find that less than half of them are just standing there doing seemingly idle things."

Aside from water, concrete is the most widely used material on Earth. If the cement industry were a country, it would be the world's third-largest emitter of carbon dioxide, emitting a staggering 2.8 billion tons, after China and the United States.

Approximately 15% of Tyrannosaurus rex fossil specimens show signs of infection or death from trichomoniasis, a mandibular parasite that leaves visible holes in the bone. Modern birds, such as falcons and hawks, may have suffered from similar trichomoniasis infections.

Humans are a tropical species. Human evolution has produced bodies capable of living in hot and humid environments. As for cold weather, our species is still in its infancy, and physiologically speaking, our bodies should not be able to survive there.

The widely held notion that 25 is the "end" of mental maturity is outdated. Recent research suggests that the prefrontal cortex matures well beyond 30.

After the Battle of Clydion, Byzantine Emperor Basil II, known as the "Bulgarian Killer," divided 15,000 prisoners of war into groups of 100, blinded 99 of them, and left one with one eye so that he could lead the others home.

Detroit agate, or Motor City agate, is a type of old car paint that has hardened enough to be cut and polished. It is used to make jewelry.

Gray hair is a sign of active hair growth. Gray hair is also thicker and grows faster than colored hair.

Time magazine was the first to coin the term "World War II".

Beyoncé earned $24 million from a one-hour concert in Dubai.

Disney spends $10.68 billion annually to keep its parks open and operational. If divided equally, that would cost approximately $3.25 million per park per day to keep them open.

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Life expectancy in Cambodia was 14 years in 1978.

Beyond Good & Evil 2 broke the record for the longest game development time, taking nearly 16 years.