This animation demonstrates how a washing machine works.
Extinct species of fish which had thick ´armor´ protecting the head.
Flat feet, or fallen arches, may cause a number of health problems.
Amino acids that make up proteins are bound by peptide bonds.
The wearer of the armor found at the archeological dig of the Issyk Kurgan in Kazakhstan was named the ´Golden man´.
The poisonous bite of the Chilean recluse spider poses a serious threat to human health.
One of the main units of Matthias Corvinus´ Black Army was the cavalry.
The tower situated in the capital city of the Kazakh Republic symbolizes the tree of life holding a golden egg.
Cyclones are large areas of swirling air with clouds and precipitation being formed inside.
Living fossil, important stage in the evolution of tetrapods.
World War I brought major changes in military technology, due to the development of new weapons.
The fortress of Oradea in Transylvania is a good example of medieval fortress architecture.
Market towns became the most common type of towns in the Kingdom of Hungary by the Late Middle Ages.
The Mir Castle Complex, situated in the town of Mir, Belarus was built in the Gothic-Renaissance style.
One of the most important parts of a medieval castle was the Knights´ hall.
Scipio’s Roman army defeated Hannibal’s Punic army in the battle fought during the 2nd Punic war in Africa.
Ancient Indians built huge, naturally ventilated storehouses.
The masterpiece of Buddhist architecture is located in India.
Before the appearance of firearms medieval battles were often decided by armored knights.
Ancient Greeks became the ‘carters of the sea’ thanks to their advanced sailing ships.