The world´s most famous citadel, the Acropolis of Athens was built in the 5th century BC, during...
A spectacular demonstration of algebraic expressions.
This animation introduces the most important organ systems of the human body.
This animation demonstrates how the Earth and the Moon were formed.
Ears convert the vibrations of air into electric signals which are then processed by the brain.
The most famous and most magnificent amphitheater of Rome was built in the 1st century.
The church of the ´Holy Wisdom´, built in the Byzantine Empire, had been one of the largest...
Visit the workshop of the Renaissance polymath and his most important inventions and works of art.
This animation demonstrates different types of volcanic eruptions.
Large carnivores, perhaps the best known of dinosaurs.
The desalination process produces drinking water from seawater.
This animation demonstrates the type of engine most commonly used in cars.
This animation presents some animals and plants that lived between the Devonian and Permian...
Deforestation has a negative impact on the environment.
The Pula Arena, located in present-day Croatia, was one of the largest Roman amphitheaters in...
The Hussites mastered the use of war wagons in the 15th century.
One of the most common tree of the pine family, native to Eurasia.
Waterfalls form where the river flows over a steep precipice in its course.
Modern Slavs live in 14 European countries that can be classified into 3 groups.
Slavic warriors were greatly respected throughout Europe in the Middle Ages.