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Why did World War One break out? Who faced each other on the battlefields?
Who were the winners and losers of World War I? Among other things, this video sheds some light on that, too.
Prolonged war is a great burden both for military personnel and civilians.
The closest relative of cattle that has become almost extinct. They used to live in the prairies, today they can only be found in several national parks.
One of the most visited regions of Romania renowned for its numerous medieval buildings, church buildings, monuments and natural beauties.
Metro is an indispensable way of public transport in a metropolis. It is the fastest way to reach one’s destination within the city.
Buttes keep the evidence of previous volcanic activities. Their material is mainly of basalt. Their shape can often be coffin-like, or flat on top with a plateau.
The climatic snow line is the point above which snow and ice cover the ground throughout the year. The actual snow line may seasonally be significantly lower.
Upper-course river features include V-shaped valleys, interlocking rapids and waterfalls.
Mining is a crucially important industry, but its long-term consequences, for example the destruction of the landscape, are often ignored.
Lignite is a sedimentary rock that still shows traces of plant structure. It is a coal with lower heating value.
History is not always based on bare facts, sometimes serious research needs to be done to explore our past. People who do that are called archaeologists, that is, the detectives of times gone by.
Many remains of buildings are still visible in almost all provinces of the ancient Roman Empire. Excavation work is still going on today.
Socialist realism was the official style of art in the Soviet Union and the communist Eastern Bloc.
In big cities, the park & ride service is gaining popularity. Passengers can get to their workplace in the town centre quite fast, avoiding traffic jams.
Lakes formed by the movement of plates of the Earth's crust are called tectonic lakes. The shifting of tectonic plates can create basins which, when filled with water, form lakes.
When designing a neo-Gothic church building, architects are inspired by Gothic elements.
Recreational activities, especially in the summer months, are becoming more and more popular.
This video shows a typical 10th century Central European village.
Several labour camps were established in the communist Eastern Bloc, the existence of which was kept secret for decades.
The quality of life in industrial cities is often poor, and air pollution is high. Establishing industrial parks could provide the solution to these problems.
In rock-paper-scissors, the least popular choice of players is paper. But is it really the weakest of the three?
The tradition of horse riding has a very long history. Even today riders often put on authentic costumes.
In this experiment we prove that it is possible to cut a bottle with just a string.