The desalination process produces drinking water from seawater.
The church of the "Holy Wisdom," built in the Byzantine Empire, had been one of the largest religious buildings until 1935, when it was converted into a museum.
This animation demonstrates how the Earth and the Moon were formed.
This animation demonstrates different types of volcanic eruptions.
The world's most famous citadel, the Acropolis of Athens was built in the 5th century B.C., during the Age of Pericles.
Large carnivores, perhaps the best known of dinosaurs.
This animation presents the formulas to calculate the perimeter and area of shapes as well as the surface area and volume of solids.
The ear converts the vibrations of air into electric signals which are then processed by the brain.
This animation introduces the most important organ systems of the human body.
The round tower of the largest fort in the Arabian Peninsula had an ingenious defense system.
This animation demonstrates the type of engine most commonly used in cars.
The most famous and most magnificent amphitheater of Rome was built in the 1st century.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
The animation offers a summary of the history of aviation from the Middle Ages.
Visit the workshop of the Renaissance polymath and his most influential inventions and works of art.
The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.
The Moon is the Earth's only natural satellite
The name of this magnificent palace complex originates in Arabic and means 'the red one'.
The range of applications of unmanned aerial vehicles ('drones') keeps growing.
A metropolis is a large city with a population of over 1 million people.