One of the most modern means of transport is the Maglev, capable of travelling at speeds of over 400 km/h.
The American inventor presented his invention revolutionising telecommunication at New York University in 1837.
Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.
The device that transmits human voice as electrical signals was invented by Bell in 1876.
The Earth is a rocky planet with a solid crust and oxygen in its atmosphere.
The huge dam built on the Colorado river in the US was named after a former American President.
The Troll A is an offshore natural gas platform, the largest offshore platform ever built: it rises about 170 metres above water level, weighs 656,000...
Mitosis is the process by which a eukaryotic cell divides into two cells and the number of chromosomes remains unchanged.
A Zeppelin is a type of rigid-framed airship.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
This animation shows the symptoms and treatment of secretory otitis media.
A spectacular demonstration of algebraic expressions.
This animation demonstrates the structure and operation of hair dryers.
The ´Temple of all gods´ was built during the reign of the Roman Emperor Hadrian.
Stratovolcanoes consist of layers of volcanic ash, debris and lava.
The Earth’s magnetic North and South poles are located near the geographic North and South poles.
A type of large freshwater crayfish widespread in Europe.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.
Human activity increases the greenhouse effect and leads to global warming.
Tsunami waves are very high waves of immense destructive power.