Curiosities of the world

Curiosity is a word originated from the Latin “curiositas”, which means “desire for knowledge” or “desire for information”. Curiosity, a characteristic present in humans and other animals, is capable of promoting learning and skill development.

Check out in the “Curiosities” section several facts that are unknown to most people, such as events, intriguing concepts, origin of popular expressions and stories that exist behind some phenomena.

Below are some lists of curiosities you probably never heard of.

Interesting curiosities

Every minute, about 72 hours of content are uploaded to the YouTube video site.

Mount Everest is estimated to grow 4 millimeters each year.

Three Gorges Dam is the largest hydropower project ever built, located in China, would extend the length of the day by 0.66 microseconds if it operated at maximum capacity. This would be due to the huge body of water it holds.

Image by Britannica
Due to the huge body of water that is being dammed, the Three Gorges Plant has the capacity to alter the Earth’s rotation movement.

During the Super Moon phenomenon, it is estimated that the lunar diameter may increase by up to 14%.

There is a lamp that has been on continuously for more than 113 years in the city of Livermore, California.

The human brain is made up of approximately 75% water.

The hot dog is a 15th century German invention.

Some animals, such as kangaroos, do not stop growing even when they reach adulthood.

Most cows cannot get down stairs.

On average, an adult breathes 550 liters of pure oxygen daily.

It is estimated that 4% of the world population is left-handed.

The biggest word in the Portuguese language refers to a disease caused by the breathing of volcanic ash: pneumoultramicroscopicossilicovulcanoconiótico.

Sequoias are trees that can reach 115 meters in height, 12 meters in diameter and about 1400 tons, living more than 4500 years old.

Image by New York Post

Curiosities about the world

Brazil is the country that has the largest Japanese community outside Japan. In São Paulo alone, more than 600,000 Japanese live.

Ethiopia’s calendar is seven years behind other Western countries.

The widest avenue in the world, with 14 different lanes, is in Argentina.

Avenida 9 de Julho, the largest in the world, is in Argentina.

Image by shutterstock

More than 10% of all the world’s biodiversity is found on the Australian continent.

Russia is the largest country in the world, occupying about 10% of all the earth on the planet.

In the Netherlands, the number of bicycles is estimated to exceed three times the number of vehicles.

The smallest country in the world is the Vatican, with about 800 official inhabitants.

Scientific curiosities

The Sun converts about 600 million tons of hydrogen into helium every second due to the nuclear fusion process.

Image by Deposit Photos

A pinhead-sized volume made of the material of a neutron star would have a mass of 1 million tons.

The deepest part of the ocean reaches 11 thousand meters.

The human skeleton is made up of 206 bones, however, babies are born with about 270 bones, which merge into larger bones.

The Earth orbits the Sun at a speed of approximately 107,000 km / h.

The human body has more than 96,000 km of blood vessels.

It is estimated that the Universe has more than 10 billion galaxies.

Sunlight takes about 8 minutes and 20 seconds to reach Earth.

The day is approximately 23 hours and 56 minutes, not 24 hours. So, every four years, we add a day to the month of February. These years are called leap years.

Animal facts

A chicken’s flight record is 13 seconds.

Mosquitoes are the most lethal animals in the world, causing more human deaths than all wars in history. These living beings kill about 725,000 humans annually.

Image by Health One Medicine

A flea can jump up to 350 times its height.

Ants are able to lift up to 50 times their own weight.


All mammals are capable of jumping, except elephants.

Giraffes do not have vocal cords.

The tongue of a blue whale can weigh up to 3.6 tons, equivalent to the weight of an average elephant.

Image by TWS

Butterflies have about 12,000 eyes.

The longest-lived vertebrates in the world are sharks from Greenland, which can live for about 400 years.

There are some live trees around the world that are at least 5000 years old.

Polar bears are practically invisible by heat cameras due to the efficient layer of insulating fat that protects them from the cold.

Image by Quora

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