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The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting...
The products of oil refining include diesel oil, petrol and lubricants.
Air transportation has become the fastest, most reliable and most popular form of travel.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
In a passive house a comfortable inner temperature can be ensured without the use of...
This lesson presents the old and modern ways of utilising wind energy.
People with a higher social position tend to separate themselves from the lower social classes....