Digging a tunnel for high-speed trains
In Switzerland the Gotthard Base Tunnel is being dug under the Alps for high-speed trains. The tunnel will also be used by rail shuttles, which will carry lorries across the Alps by train and take them off the roads.
Generating electricity by nuclear fusion
Engineers explain how nuclear fusion could provide us with energy for thousands of years with relatively little radioactive waste.
Generating electricity from wind power
Wind energy will help the UK to obtain 15% of its electricity from renewable sources by 2015. Engineers explain how a site is chosen and how a wind turbine works.
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