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This animation demonstrates the type of engine most commonly used in cars.
The world's most famous citadel, the Acropolis of Athens was built in the 5th century BC, during the Age of Pericles.
Visit the workshop of the Renaissance polymath and his most influential inventions and works of art.
The ear converts the vibrations of air into electric signals which are then processed by the brain.
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 loggerhead sea turtle is one of the most common species of turtles in the Mediterranean Sea.
The great spotted woodpecker highly depends on woodland habitat, which is reflected in its anatomy and lifestyle as well.
The cave paintings in the Tsenkher Cave, formed in limestone, make it one of the most significant archaeological sites of the Palaeolithic Era.
Divers are supplied with special equipment that helps them breathe and swim underwater.
Dive to the bottom of the Pacific Ocean and learn about the legendary voyage and the participants.
The common nettle is one of the most widespread weeds and herbs in the world.
The largest owl in Europe is the Eurasian eagle-owl, which hunts silently at night.
Domestic yaks (Bos grunniens) are large, cold-tolerant ruminants living mainly in Central Asia's high mountains.
The young leaves of the evergreen tea plant are used to prepare a stimulant infusion.
Learn about the significance of regeneration in the animal kingdom by examining various examples.
It is an echinoderm living on the sea floor that plays an important role in the circulation of substances.
Sea stars are predatory echinoderms known for their exceptional regenerative abilities.
