Basketball is one of the most popular team sports.
The Global Positioning System consists of 24 satellites but only 4 have to be visible for...
Solar power stations convert solar energy into electricity.
This animation demonstrates instruments used to examine atmospheric phenomena.
The design and structure of modern houses play an important role in environmental protection.
The structure and density of farms and villages depend on the geographical features of the region.
Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of...
Tidal power stations utilise the daily fluctuation of the water level for producing electricity.