You probably have at least ten three-pins plugs in your home, and more at work, but have you ever stopped to look at the pins? You'll notice that one of the three is longer than the others. Find out ...

Product designer Zihni Yalcin has designed a three-pin electrical plug that folds up for easy transportation. Called ThinPlug, the product is suitable for devices that don't need to be earthed. The ...