The 900 years old Benedictine abbey is situated in Melk, on the right bank of the Danube.
The army of Alexander the Great successfully deployed siege towers in its attacks against fortifications.
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.
These Palaeolithic statuettes probably symbolise fertility and prosperity.
The curvature of the lens of the eye changes when we look at a distant or at a near object, to ensure a sharp image.
Typical settlements of the Norsemen were not only established in Scandinavia, they appeared on distant areas as well.
The magnificent capital of the Aztec Empire astonished even the Spanish Conquistadors.
This animation explains transparency and opacity, the principle of radiography, and the light-absorbing properties of materials.
The centre of the Indian mausoleum complex is a white marble tomb built by Shah Jahan for his beloved wife.
A hydrothermal vent is a fissure in the planet's surface through which geothermally heated water erupts.
Physical properties, as well as the flora and fauna of the ocean change with depth.
Taste receptors convert chemical stimuli into electric signals.
In mountainous areas the climate, soil properties, the flora and fauna change depending on elevation.
A widespread snail species, also popular as food.
The intriguing history of this historic castle spans nearly a thousand years.
The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...
The bacterial disease known as the bubonic plague is one of the deadliest infectious diseases in the history of mankind.
The building commissioned by Pompey the Great was the first permanent theatre in Ancient Rome.
This animation demonstrates the anatomy of spiders through the example of a common European species.
Majestic even in its ruins, this city was the largest and most populous settlement in the pre-Columbian Americas.