Guardian: A traditional childhood pastime could provide a breakthrough in renewable energy, after successful experiments in flying a giant kite at one of Europe’s top research centres. Scientists from Delft University of Technology in the Netherlands harnessed energy from the wind by flying a 10-sq metre kite tethered to a generator, producing 10 kilowatts of power. The experiment generated enough electricity to power 10 family homes, and the researchers have plans to test a 50kW version …