Iron and oxygen are the main components of the Earth's mass [approximately 32% of the planet's weight is accounted for by each element]. Due to the evaporation of hydrogen into space, our house «loses weight» annually by 50-60 million kg. But, fortunately, the planet is not in danger of exhaustion. It will take more than a trillion years for the Earth to reach critical mass.

TYPEWRITER [typewriter] is the longest word you can write using only one row of keyboard. 1868 gave us a typewriter. Americans Christopher Scholes and his companion Carlos Gidden created an invention that was the size of a desk and printed exclusively in capital letters. The inventors did not have the money to start mass production, so the rights to mass production of products were sold to Phil Remington, a famous designer-gunsmith.

The Royal soap of Qatar, the most expensive soap in the world, was made for the first lady of Qatar, Sheikha Moza bint Nasser al-Misned by Bader Hassoun & Sons. It consists of gold, diamond dust, olive oil and natural honey. The soap was created in a single copy, and despite the desire of many sheikhs to purchase this product, the company refused to repeat it.

Nephology is the science of clouds, which deals with the physics of clouds in the field of meteorology. Clouds are not just clumps of water droplets and sometimes ice, but dust covered with these water particles in different states. Clouds can tell us not only about the weather, but also about the state of the environment, and cover about 67% of the globe.

The strongest insect in the world — or a dung beetle, it can hold a load heavier than its body by 1,141 times. The horns allow him to compete for the most attractive female. But hornless males choose females while their horned brethren are fighting fierce battles. Dung beetles bring great benefits to the environment by accelerating the decomposition of organic substances in manure and increasing soil fertility.

Ghost ships are ships drifting in the seas and oceans with a dead or disappeared crew. And if a few centuries ago the stories about such ships seemed only legends, now they are terrifying and make you think about how little humanity knows about the boundless blue abyss that occupies most of our planet. In 2021, the last such «ghost» with two dozen bodies was discovered in the Caribbean Islands. The cause of death has not been established, but the police did not find traces of a struggle on the ship.

Today there are thousands of types of tulips in the world, in some countries certain varieties are even eaten, but in the middle of the XVII century in Holland they were considered such a rarity that they were valued at their weight in gold and used as currency.

The longest novel is a seven-volume edition by Marcel Proust under the «talking» title «In search of Lost Time». It stores 1267069 words, the approximate number of characters is more than 9.6 million, which is twice as much as in Leo Tolstoy's War and Peace. The last three volumes were published posthumously.

Helium is a unique substance that can not only inflate balloons and, inhaling, speak in a funny voice. Its properties are extraordinary — it is a monatomic gas, the molecules of which not only do not combine with any other substances, but even with each other. In the liquid state, its surface becomes absolutely smooth, without a single bubble and moves against the force of attraction, crawling out along the walls of the vessel. It is extremely difficult to achieve a solid state from helium — for this you need a pressure of 35 atmospheres and an extremely low temperature.

The human body is completely renewed every ten years. Every day we observe how hair, nails grow, exfoliate the skin with scrubs, removing keratinized areas, but we do not even think about the fact that bones, mucous membranes, tongue and every cell in any organ undergo transformation every day. The liver is completely renewed in 2.5 months, the surface of the intestine and stomach — every three days. It takes 5-20 days to replace bronchioles and alveoli in the lungs. The retina and lens of the eye are not capable of regeneration, but the cornea can recover within a day with a small injury. This suggests that with proper perseverance, proper nutrition and lifestyle, we are able to modernize our body in spite of genetics.