Graham checks out a high-tech light-show in Hong Kong, and finds out what happens when the world's best car designers are let loose on designing billy carts in California. Hayden looks at a replacement for the whistle, which also has applications beyond the sporting arena, and a device that will quickly scale walls. Anna visits the International Consumer Electronics Show in Las Vegas. Kim tries out a tent that can withstand extreme hurricane winds. Adam and Jamie put fireworks into a trombone mute. Caroline looks at a device that is changing the future of CPR.
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