Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
The animation shows the traditional Japanese wooden townhouse, the machiya.
A demonstration of nearby planets, stars and galaxies.
The legendary city of the Mayan-Toltec Empire was located on the territory of present-day Mexico.
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
This animation explains transparency and opacity, the principle of radiography, and the light-absorbing properties of materials.
The Benz Patent-Motorwagen is widely regarded as the first vehicle propelled by an internal combustion engine.
A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.
The French Montgolfier brothers were the first pioneers of flying.
This Pacific island is famous for its unique monolithic human figures.
The English engineer George Stephenson’s locomotive was built for a competition of locomotives in 1829.
The ruler of the vast Mongol Empire was the Khan.
The most important weapons of medieval Arab warriors were the bow and the sword.
An introduction to the relief and hydrography of China.
The Aztec Empire was a despotic, militaristic state ruled by the tlatoani.
Oases are areas in deserts where water is available.
The bell is a percussion instrument and an idiophone. Many types of bells exist.
The piano is one of the most popular instruments in the world. It is a chordophone which produces sounds mechanically.
Its architectural solutions and ornamentation rank this mosque among the masterpieces of Islamic art.
Igloos were the typical dwellings built by Eskimos living in the Arctic zone.