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Massive accelerating or orbiting bodies cause ripples in spacetime. These are called...
The church of the ´Holy Wisdom´, built in the Byzantine Empire, had been one of the largest...
The most famous and most magnificent amphitheatre of Rome was built in the 1st century.
This animation demonstrates different types of volcanic eruptions
A spectacular demonstration of algebraic expressions.
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 world´s most famous citadel, the Acropolis of Athens was built in the 5th century BC, during...
Visit the workshop of the Renaissance polymath and his most important inventions and works of art.
This animation introduces the most important organ systems of the human body.
The desalination process produces drinking water from seawater.
This animation demonstrates the type of engine most commonly used in cars.
Large carnivores, perhaps the best known of dinosaurs.
A collection of legendary buildings from the history of the world.
A hydrothermal vent is a fissure in the planet's surface from which geothermally heated water...
The Suez Canal is an artificial waterway connecting the Red Sea and the Mediterranean Sea.
The Panama Canal is an artificial waterway created to shorten shipping routes between the...
Several ingenious instruments have been invented over the centuries to help in navigating the seas.
Standing bodies of water can form in depressions on the surface by both endogenic and exogenic...
Many of the most important food crops we consume belong to the family of nightshades.