Mars Exploration Program

Space probes and Mars rovers examine the structure of Mars and possible traces of life.

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Geothermal power station

Geothermal power stations convert energy of hot, high-pressure water found in deeper...

Rolling roads

The rolling highway (Rollende Landstrasse) is an environmental friendly way of transport where...

The Channel Tunnel

The Channel Tunnel is a 50.5 km long railway tunnel between the United Kingdom and...

Soil pollution

This animation demonstrates the main sources of soil pollution.

Solar power station

Solar power stations convert solar energy into electricity.

Football stadium

Football is one of the most popular team sports due to its relatively low equipment...

Population pyramid

The population pyramid is a representation of the age and gender composition of a given country.

Ferrous metallurgy (intermediate)

Raw iron is produced from iron ore in iron smelters.

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