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10 / 10
1. Water-powered phone charger. Fast draining smartphone batteries are pain at the best of times. But what if you’re nowhere near a plug? Well, thanks to Swedish designers of the PowerTrekk, which generates electricty with water, you can charge up in the countryside.The £160 sodium fuel cell device converts the water to hydrogen and generates power via another chemical reaction.

Top 10 innovations of the year

Sci fi became reality this year with Google Glasses - computer-powered glasses that layer email and sat-nav over the real world. But other inventors pioneered even crazier ideas - from a flying drone that bellows encouragement while you jog, to a gun that makes people stop talking using a weird sonic effect.