Based on their life cycle, insects can be grouped into three categories: ametabolous, hemimetabolous or holometabolous insects.
This animation demonstrates several types of prisms, from general to regular.
Market towns became the most common type of towns in the Kingdom of Hungary by the Late Middle Ages.
Inhabitants of ancient Egypt wore characteristic clothes and jewellery.
The castle of Eger got its final shape and became an important component in the new chain of border forts in the 16th century.
King Darius as well as Xerxes built pontoon bridges across the Bosphorus for the Persian army.
Automobiles have evolved a lot since the late 19th century.
Caliphs, considered successors of the Prophet Muhammad, were the most important religious leaders of Islam.
Ancient Persian monarchs were famous for the size of their empire and their wealth.
Egyptian Pharaohs were respected as gods, they were lords of life and death.
The most important types of local winds are the sea-land breeze, the mountain-valley breeze as well as the downslope winds.
Slavic warriors were greatly respected throughout Europe in the Middle Ages.
Ancient Greeks became the ‘carters of the sea’ thanks to their advanced sailing ships.
The animation demonstrates the process of ring closure of open-chain glucose into alpha- and beta-D-glucose.
The tower situated in the capital city of the Kazakh Republic symbolises the tree of life holding a golden egg.
The wearer of the armour found at the archaeological dig of the Issyk Kurgan in Kazakhstan was named the 'Golden man'.
A zither is one of the typical instruments of Hungarian folk music, played by strumming or plucking the strings.
The Canadian helicopter is one of the most widely used helicopters in the world.
Large, extinct species of cats named after the shape of their large canine teeth.
Giant sequoias are the world's largest living organisms by mass.