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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.
This animation introduces the organ systems of the human body.
The world's most famous citadel, the Acropolis of Athens was built in the 5th century B.C., during the Age of Pericles.
Visit the workshop of the Renaissance polymath and his most influential inventions and works of art.
Large carnivores, perhaps the best known of dinosaurs.
Pollution is the detrimental effect of human activity on the natural environment.
Travel to Venice, a merchant city, often called the 'Queen of the Adriatic', at a unique location.
The 3D scene presents Mercury's scorching surface, Venus' hellish atmosphere, the Moon's barren landscape, and Mars' red desert.
Explore the lava lakes on Io, the mysterious icy world of Europa, the haze-shrouded surface of Titan, the shattered land of Miranda, the icy geysers on Triton and the frozen, mystic plains of Pluto.
Dive to the bottom of the Pacific Ocean and learn about the legendary voyage and the participants.
The cave paintings in the Tsenkher Cave, formed in limestone, make it one of the most significant archaeological sites of the Palaeolithic Era.
The common nettle is one of the most widespread weeds and herbs in the world.
Learn about the operation of locks and padlocks from 2000 BC to the present day.
Sugar cane, cultivated in tropical or subtropical regions, is the primary raw material for sugar production.
Learn about weapons and devices used during medieval sieges.
Young children can learn the basics of directions and programming in a playful way.
Explore the splendour of Bratislava Castle (the Baroque palace and the garden) in the era of Maria Theresa.
The Grand Canyon is one of the Seven Natural Wonders of the World.
The reconstruction of this unique settlement allows you to learn more about the daily lives of people in the Bronze Age.
The hydrogen bomb unleashes the destructive power of the stars' fire upon humanity.