16 interesting facts that are hard to find on Google

Google with a huge data source, just like the encyclopedia can almost tell you about everything in the world. However, there are still interesting facts that you can hardly find on Google.

1. The 10 greatest machines in human history
2. Every beer bottle cap has 21 aliases, why?
3. Why do traffic lights have 3 colors of red - yellow - blue and toilet paper must be white?

Here are 16 interesting facts that Google didn't tell you, according to Brightside's statistics.

You will see the light flare if you cut the road in the dark.

The cross section of the Colgate toothpaste tube looks like this. Looking at the picture, we can see how the colors in a tube of toothpaste are mixed.

Avocado is classified as a berry rather than a fleshy fruit because it is made from the ovaries of a single flower.

The word 'Hollywood' was originally 'Hollywoodland' a giant real estate advertising billboard.

Polar bears have black skin.

The mysterious Sentinel tribe, living on an island in the Indian Ocean, doesn't know how to create fire.

Wombat, an Australian marsupial, has poop-shaped feces.

There are sharks that live very long, even longer than some plants. Scientists have discovered a large 512-year-old Greenland shark in the Arctic Ocean.

Eggplant contains nicotine but very little. Nicotine in about 10kg of new eggplant is equal to the amount of nicotine in 1 cigarette.

Horses and rodents cannot vomit due to the structure of the digestive system.

Marine fish actively drink a lot of water, while freshwater fish absolutely do not.

Pure gold is edible, because it does not cause any irritation or poisoning to humans.

In 1983, the Vatican - the smallest country in the world, was the first country in the world to have a fertility rate of 0.

The most popular word in the world is OK.

What whales spray on is CO2, not water.

In Switzerland, children start kindergarten at the age of 4.