A lake is a body of still water surrounded by land. The majority of lakes contain freshwater. On a geological scale their lifespan is relatively short.
The terrestrial planets in our Solar System are the four planets closest to the Sun. They are made up of rocks and metals and have hard surfaces.
Let’s make a pinwheel! It is a witty little toy if you give it a go in windy weather, too!
Let’s make a toy applying a simple but genius method, using yarn and a pair of scissors!
Can a candle be re-lit if the flame of the match does not even touch it?
Make a magnifying glass using a jar, some cling foil and a few drops of water.
How can a tin can be crushed without manual force? All you need is some water and heat.
These unique works of art are renowned and sought-after worldwide. It is not unusual to spend 5000 hours working on a single tablecloth.
It is a popular form of urban travel. The first trams were built in the 19th century to satisfy the increasing demand for public transport.
After the first oil crisis in 1973, trolleybuses gained popularity in urban transport systems since their operation does not depend on the price of crude oil.
The rolling highway (Rollende Landstrasse) is an environmental friendly way of transport where lorries are transported by trains.
Let's visit Prague, the capital of the Czech Republic and learn about its sights and the world famous Czech beer.
This species is an excellent example for symbiosis. Living together with sea anemones they keep predators away.
The establishment of Stalin’s dictatorial regime and its consequences.
A species of monkeys with complex social structure where hierarchical system can be clearly observed.
Wind is one of the most important renewable energy source of our time.
In this experiment we prove that it is possible to cut a bottle with just a string.
The tradition of horse riding has a very long history. Even today riders often put on authentic costumes.
Watch how to a make a toy truck using matchboxes.
During the course of history, bridges were points of strategic importance. Today they have a significant role in infrastructure.