The warship having several rows of oars was the typical warship of the Hellenistic era.
This effective strategy was based on the fast and synchronised attack of different branches of the army.
Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.
The legendary M61 class locomotives of the Hungarian State Railways were manufactured by Nohab.
This animation demonstrates the mechanism and operation of record players.
An air conditioner cools the air inside by drawing heat away and releasing it outside.
This Neoclassical structure is one of the best-known landmarks of Berlin and Germany.
The fat-tailed scorpion is one of the world's most dangerous scorpions.
The German engineer Otto Lilienthal was the first person to make successful flights with a glider designed by himself.
A geisha is a traditional Japanese entertainer whose skills include performing classical music and dance.
This animation demonstrates how muscles and vertebrae move the head.
The limbic system plays an important role in forming emotions and in learning.
Pearls, often used as gemstones, are the by-products of certain molluscs' protective mechanisms.
The Vought F4U Corsair radial-engined naval fighter was one of the most prominent American aircraft of the Second World War.
During the evolution of vertebrates the relative development of brain areas has changed.
Ancient Egypt was called the ‘gift of the Nile’, since the river played an important role in the rise of Egyptian civilisation.
The Apache attack helicopter, named after an American Indian tribe, was developed for the United States Army.
Ziggurats were typical terraced step pyramids used as temples in ancient Mesopotamia.
Static warfare was one of the characteristics of WWI
The German liquid-propellant rocket, developed during WWII, was the first known man-made object to reach space.