Sugar Could Charge up Gadgets Just Like it Gives a Jolt to Kids

Lithium-ion batteries are the most common technology powering modern devices. But lithium itself is a rare metal that's hard to come by, and countries that have to import it are developing alternatives. In Japan, researchers at the Tokyo University of Science have discovered a way to make a sodium-ion battery that … » 9/24/12 10:00am 9/24/12 10:00am