Reuters: Welcome to Surya — self-styled “world’s first ecological nightclub” where cyclists and walkers get free admission to a club with dancefloor so high-tech it generates its own electricity when people move on it. When clubbers need a rest from strutting their stuff on the dancefloor they can relieve themselves at the latest air flush, waterless urinals and low flush toilets as well as taking the opportunity to freshen up with the club’s automatic taps. If Princes Harry and …