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Pollution is the detrimental effect of human activity on the natural environment.
The ear converts the vibrations of air into electric signals which are then processed by the brain.
This animation demonstrates the type of engine most commonly used in cars.
The round tower of the largest fort in the Arabian Peninsula had an ingenious defence system.
The world's most famous citadel, the Acropolis of Athens was built in the 5th century BC, during the Age of Pericles.
Large carnivores, perhaps the best known of dinosaurs.
This animation introduces the most important organ systems of the human body.
Visit the workshop of the Renaissance polymath and his most influential inventions and works of art.
During the construction of the Aswan High Dam, the Temples of Abu Simbel were relocated.
The Gothic cathedral is one of the best-known buildings in the French capital.
The aerospace manufacturer company, founded in 2002, revolutionised space research by designing reusable rockets.
Human constructions can be built using various technologies regarding their material, structure and the interactions of forces they have to withstand.
A common hare species found in most temperate regions of the world.
The polar bear is a large land carnivore that inhabits the Arctic.
The most common species of sea urchin in the Mediterranean Sea and eastern Atlantic Ocean.
The most important monastery in Serbia, considered the birthplace of the independent Serbian Orthodox Church and the state.
A large, spectacular aquatic plant that is an important symbol in various Asian cultures.
Until the early 21st century, space travel served scientific purposes exclusively. Then, space tourism appeared.
Throughout history, engineers have come up with a lot of brilliant technological solutions, but, in numerous cases, they have committed serious mistakes as...
The cotton plant is cultivated for one of the most important raw materials of the textile industry.