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— Energy

Kinetic energy-harvesting shoes a step towards charging mobile devices on the go

Through energy harvesting tiles, backpacks and insoles, there has been much talk about harnessing our kinetic energy to power mobile devices and other electronics. A team of researchers is claiming to have made a big breakthrough in the collective effort to turn human motion into usable energy, developing a new method of producing useful amounts of electricity from our footsteps.

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— Bicycles

Craig Calfee: Rear suspension will revolutionize road-race cycling

Suspension has long been a dirty word among road-racing cyclists, but if carbon fiber wizard and cycling visionary Craig Calfee nails his latest prediction as cleanly as his previous ones, it won't be long before every rider in the Tour de France is enjoying the comfort, performance and traction benefits of a suspended rear end. Calfee's top-of-the-line Manta bikes now feature an incredibly simple, lightweight rear suspension spring with a tiny 12 mm of travel that he believes will revolutionize the sport. Gizmag visited the Calfee workshop in Santa Cruz to find out more.

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— Computers Review

Review: iClever IC-BK03 keyboard unfolds for touch typing

Ever been stuck in a doctor's waiting room longer than expected with a report to finish and the only option is to try to bang out a draught on your phone? One alternative to typing with your thumbs is to pack along a folding Bluetooth keyboard. The question is, which one? We recently got hold of an iClever IC-BK03 Trifold Bluetooth keyboard, went for a flu jab, and tried it out.

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— Marine

Mercedes and Cigarette Racing make a splash with GT3-inspired boat

The Miami International Boat Show started this week, and that means there's an all-new powerboat dressed up like a high-performance Mercedes. The Cigarette Racing Team and Mercedes have teamed up once again, picking up where they left off with last year's GT S-inspired boat to create a GT3 boat. If this 2,200-hp (1,640 kW) open-top harpoon doesn't bring the thrill of car racing to the open seas, few vessels have a chance.


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— Materials

Grass used to make thinner, stronger condoms

So first of all … no, nobody is thinking of weaving together blades of grass to make condoms. Scientists at Australia's University of Queensland, however, are having success with condoms made from a latex with added nanocellulose obtained from a native grass. Not only are they stronger than regular latex condoms, but they could be as thin as the diameter of a human hair.

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