Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
This animation shows the characteristics of domestic light sources, from traditional light bulbs to LED lights.
A dynamo converts mechanical energy into direct current.
A hydrothermal vent is a fissure in the planet's surface through which geothermally heated water erupts.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
The three important laws describing planetary motion were formulated by Johannes Kepler.
A wooden church built in the 12th-13th centuries, the best preserved of Norway´s stave churches.
The animation shows five outstanding works in the history of sculpture.
The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...
This animation demonstrates the parts of the head, the torso and the limbs.
Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his first, landmark voyage.
Medieval townhouses were built from stone or brick and were several storeys high.
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
Bottlenose dolphins are sea mammals which use ultrasound for orientation.
This animation introduces the most important systems of the human body.
The atomic bomb is one of the most destructive weapons in human history.