Waste fibers from hemp crops out-perform graphene for a thousandth of the cost, according to new researchIs there anything hemp can’t do? A year after hemp became legal to grow in the United States, we’ve seen its power to make better clothing, better buildings and better medicine. Now, there’s something else hemp appears to be better at – making batteries. Most auto batteries today are made from lithium-ion, an expensive, quickly disappearing material. A team of American and Canadian researchers have developed a battery that could be used in cars and power tools using hemp bast fiber – the inner...