- Looking at the earwax, you will know right away if you are susceptible to armpit odor.

According to scientists' results, the body's earwax and sweat glands (armpit odor) are closely related. Through your body's earwax, you may know if you have a 'heavy' body odor.
- How many people have conquered the depths underground?

The distance from the surface to the center of the Earth is about 6,378km. Although we have tried very hard, we still cannot 'touch' this depth.
- Why are ATMs using metal numeric keypads?

The cause of using metal numeric keypads is to prevent code leaks.
- Examine the process of turning garbage into street bricks and clothes in Japan

Visit one of the modern waste treatment plants in Tokyo to know how effective Japanese waste disposal is!
- The strange island values the dead more than the living

The tombs on the island are built of stone weighing up to 70 tons and need hundreds of healthy men to pull them by hand to the village from the quarry.
- The incredible truth about American presidents makes everyone surprised

Here are some interesting details about the private life of famous US presidents such as Thomas Jefferson, Abraham Lincoln, Andrew Johnson ... that will surely surprise you.
- When you turn off the light in the room, where did the light go?

When you turn off the light in the room, the darkness will cover everything, so where did the light go?
- Why do you always bathe every day and still hate?

You do not exercise much, do not go out and clean bath every day but why do you always hate to scrub?
- Finding the nude portrait of the Mona Lisa made the experts confused

Recently, experts at the Louvre Museum in France believe that Leonardo da Vinci drew a graphite manuscript named Monna Vanna, portraying a nude woman and that is the Mona Lisa.
- 11 interesting differences between the two ends of the Earth: Arctic and Antarctica

Because of the tilt of the Earth's rotation axis, the amount of sunlight that reaches the Arctic and Antarctica is quite the opposite, so everything exists and happens at two
- Why do human hands have 5 fingers?

Mark Changizi, an American neuroscientist, has developed a simple mathematical formula to explain the amount of an organism, from insects to mammals, even aliens.
- The width and path of radioactive clouds if North Korea tests the Pacific thermonuclear bomb

Radioactive clouds can spread across the sea to Asia and the United States, flying around the world affecting animals and humans thousands of kilometers away.
- If you lack human water, how long will you live?

Lack of human water can only live for a short time, depending on specific conditions.
- If struck by lightning when flying, is the bullet affected?

When discharging in the atmosphere, lightning can reach 28,000 degrees Celsius much larger than the melting point of a bullet with a lead core coated with a copper layer on the
- It turned out that this was the reason that only one side of the nose was suffocated with the flu

Nasal congestion or congestion usually occurs when we are sick or flu but this phenomenon only occurs on one side of the nose and not both sides.
- Why do people often choose white to paint airplanes rather than other colors?

Airplanes are a popular means of transport that people still use every day but certainly no one recognizes a common feature: these iron birds are often 'wearing' pale white shirts.
- Decode the strange phenomenon: the egg is nest in the egg

Egg-nosed eggs are the phenomenon of chicken eggs containing other intact eggs inside.
- What happens if we lose all our teeth?

Besides chewing function, helping us in the pronunciation of teeth also plays an important role to help create the beauty of each person's face and smile. So, if we lose all our
- Why often have white smoke streaks in the sky after the plane flies over?

The white stain is the exhaust of an airplane engine that is emitted in the sky and due to the difference in temperature and humidity in the air that causes the steam in the
- If shot, did you hear the first explosion or hit the previous bullet?

Watch the race between the bullet and the sound to see which one is faster.