Nomads in Kazakhstan exploit a centuries-old method of storing camel milk in places lacking electricity, processing fresh milk into fermented milk, Shubat, a local delicacy.
Italian inventor Lucien Gambarota, who designed California Fitness's method of storing energy and using it to power lights and music in the gym, told CNN the concept is straightforward.
Despite Digital's legal problems, "We're still in the pipeline, " says Theo van Bakkum of iccu Holding bv, a Smith partner who is working on a new method for storing electricity.