Take a look at the some of the technology being used behind the scenes in the run-up to 2014 Winter Olympics in Sochi. Designers and engineers put their stamp on the new Olympic torch. Southern Russia's first cable-stayed bridge goes up over the Mzymta River. Ammonia detectors keep a watch over complex cooling systems. Gas and electricity networks ramp up capacity ahead of the influx of sports fans, while new solar panels look to harness wider array of the sun's energy. Medical researchers had the novel idea to use a noble gas in an experimental exercise to boost performance.

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