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The Eiffel Tower was designed to serve only for 20 years. Its mesh structure is influenced by the constrain to be easily deconstructed. However, radio transmitters fitted to the tower effectively serve to France in World War I. After that it was unthinkable for French people to demolish the tower.

Nowadays, the Eiffel Tower is an icon of France and Paris and the most visited paid statue in the world.

Is there some sport which is extremely useful for our brain? There is! According to the American neuroscientist Daniel G. Amen the best sport for brain is ping-pong. Playing this sport gives many benefit for our brain.

In Los Angeles there are at least 13 people with exactly the same number of strands of hair. Namely, the population of L.A. is 3.8 million while a person has at most 300000 strands of hair.

Sir Isaac Newton, a versatile scientist whose discovers underline the whole modern physics and mathematics, once was asked for opinion on which of his achievements will future generation remember him. “I believe to be remembered by my theological discussion”, reply Newton.

The distance to the Moon is around 1 light-second (i.e. the distance is traveled by the light in 1 second). The distance to the Sun is around 8 light-minutes. The distance to the Sun's nearest star is 4.3 light-years. The distance to the Large Magellanic Cloud, our neighboring galaxy is around 160000 light-years. Thus, the universe is huge!

A Russian novelist Leo Tolstoy invested 5 years in writing his masterpiece War and Peace. Significant part of this time he spent searching for and studying the documents about Napoleon invasion. So, no wonder that today War and Peace is considered as a historical source.

Maria Sklodowska-Curie is the only person in history who won Nobel prices for two sciences. In 1903. he won the Nobel Price in Physics, together with his husband Pierre Curie and physicist Henri Becquerel, for results in radiation phenomena.

In 1911. he won the Nobel Price in Chemistry, for discovery of two new chemical elements – radium and polonium.

It seems that people having a short rest including sleep in the early afternoon are more efficient during the rest of day. Some researches suggest this rule.

The first women who become a professor at Sorbonne, the famous French university, was Maria Sklodowska-Curie, double Nobel laureate.

The first persons who climbed the highest peak on the world, Mount Everest, were Sir Edmund Hillary, a New Zealand mountaineer and a Nepalese Sherpa Tenzing Norgay. They reach the Mount Everest on May 29, 1953.

Imagine an iceberg in a sea. What a portion of the iceberg is above water and what portion is below sea level? Only 11% of the iceberg is above water!

The first person who break the speed of sound was Chuck Yeager. On October 14, 1947 flying an aircraft above the desert Mojave in California he achieve the speed higher than the speed of sound.

Furthermore, the first person who break the speed of sound in free fall was Felix Baumgartner. On October 14, 2012 he jump from the altitude of 39 kilometers, the height that is considered as the edge of space. In both cases nobody knew what would happen.

Apoxyomenos is an ancient Greek sculpture representing an athlete. There is only few found apoxyomenos, including the Vatican Apoxyomenos that is found in Rome, 1849. The last one founded apoxyomenos is Croatian Apoxyomenos, found by a Belgian tourist René Wouter near by Croatian island of Losinj in 1996.

The Croatian Apoxyomenos is excellently preserved and date back to 2. or 1. century B.C.

A musical genius Ludwig van Beethoven started losing his hearing in his youth. However, he composed some of the greatest musical masterpieces even when he became completely deaf.

In a party of 18 people there is always a group of four who either know each other or are all strangers to each other.

Maracanã Stadium, a stadium in Rio de Janeiro was the largest stadium by capacity when it was build. The final game of the 1950 World Cup was attended by 199854 persons. Letter, when the stadium is modernized the capacity declined. The stadium is named after the city part where it is placed while maracana is a kind of parrot from the north part of Brazil.

Eight the largest countries in the world are Russia, Canada, China, SAD, Brazil, Australia, India, Argentina, respectively.

The New Seven Wonders of the World are: Taj Mahal in Agra, India; Chichen Itza in Yucatan, Mexico; Christ the Redeemer in Rio de Janeiro, Brazil; Colosseum in Rome, Italy; Great Wall of China; Machu Picchu in Cuzco Region, Peru; Petra in Ma'an Governorate, Jordan. The Giza Pyramid of Egypt was honorary added to the list, as the only remaining Wonder of the Ancient World.

Mars is the only terrestrials planet having satellites. It has two moons called Phobos and Deimos.

Maria Curie's research papers are still highly radioactive and to access them one need a special equipment.

In a party of 6 people there is always a group of three who either know each other or are all strangers to each other.

Pluto is not a planet any more. However, nothing change with Pluto but scientist categorized it as a draft planet.

It is possible to have a whistle for dogs that can be heard only by dogs and not by people.

In Bangladesh there is a bank that lends money even to beggars. The name of this bank is Grameen and it is founded for the purpose to help the poorest people. Loan amounts are usually very small, just a few dollars.