A wooden church built in the 12th-13th centuries, the best preserved of Norway´s stave churches.
Life magazine picked Gutenberg's invention of mechanical movable type printing as the most important event of the second millennium.
A hydrothermal vent is a fissure in the planet's surface through which geothermally heated water erupts.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
The step pyramid, built in the 27th century B.C., was the first pyramid in Egypt.
This animation demonstrates the anatomy of spiders through the example of a common European species.
Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.
A widespread snail species, also popular as food.
A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.
Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.
A type of large freshwater crayfish widespread in Europe.
The French Montgolfier brothers were the first pioneers of flying.
Neurons transmit electrical signals via chemical and electrical synapses.
The magnificent bath complex of the Roman Emperor was built in the 3rd century A.D.
The steam engine, perfected by the Scottish engineer James Watt, revolutionized technology.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
Tsunami waves are very high waves of immense destructive power.
The ´Temple of all gods´ was built during the reign of the Roman Emperor Hadrian.