Tanks developed in the mid-1910s quickly became the most important weapons of land-based military operations.
In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.
Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.
The geographical distribution of major (world) religions has been influenced by historical events.
Crystalline allotrope of elemental carbon, the hardest known natural substance.
One of the crystalline allotropes of elemental carbon.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Several European countries joined the conquest of the New World, making America a colourful continent.
Every year, Santa Claus brings gifts to nearly 600 million children on Christmas Eve. Let's see what physical facts make his job harder.
A floatplane (sometimes called hydroplane) is an aircraft capable of taking off not only dry land, but water too.
The dreaded warriors of the Mongol Empire helped to make it one of the largest empires in history.
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
The US Marine Corps is an important branch of the US Armed Forces, with about 200 thousand, specially trained members.
A Romanesque style Benedictine church with a special gateway, built in the 13th century in Hungary.
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
The most popular European-made transport aircraft before World War II.
This animation demonstrates the most important seas and bays.
A game about sights around the world.
This animation demonstrates the development of freight transport, from horse-drawn carts to modern lorries.
Hovercraft are capable of travelling at high speed above the surface of water.