Designated as the first National Treasure of South Korea, the Namdaemun was one of the major gateways of Seoul's Medieval city walls.
Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
The pancreas and the liver empty digestive juices into the duodenum.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
A type of steam locomotives used by British Railways were manufactured in the 1950s.
One of the best known buildings in the world, this is the residence and office of the President of the United States.
The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.
Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.
The Internet allows us to send data quickly to large distances.
Candles have been used for lighting since ancient times.
RMS Titanic was the largest passenger ship at the beginning of the 20th century.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
This animation demonstrates the development of the axe throughout archaeological periods.
In the Tudor Era around 200 buildings were built on the bridge across the River Thames.
Commercial maritime routes of container ships form a global network.
The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.
River locks make rivers with great level differences safe for boating.
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
One of the directors of the circular, open-air Renaissance theatre in London was William Shakespeare.