The e-charkha is an ingenious update to India’s ubiquitous charkha [spinning wheel] that transforms the simple machine into a potentially significant source of energy for millions of struggling ...

Designer Taikkun Li’s Prayer Wheel Energy Generator proves that praying can actually have immediate earthly benefits. Li’s device is essentially a Tibetan prayer wheel outfitted with used bicycle ...

Every year millions of tourists and locals descend upon Tibet’s temples and spin the prayer wheels contained inside. If the mechanical energy generated by the movement of these spinning wheels could ...

Although you certainly can inflate a bike's tires using a compact hand pump, doing so typically involves some time and effort. That's why many cyclists use CO2 cartridges instead – particularly road ...