new yorkers are getting quite a charge out of greek yogurt, an electrical charge. that s because of one throw away that s otherwise environmentally toxic. in tonight s energy in america report, correspondent laura engle tells us about a new way to turn some people s trash into other people s treasure. reporter: in upstate new york, it seemed greek yogurt producers can t make the creamy stuff fast enough to satisfy the appetite of consumers. it is a nearly 3 billion city, and last year, greek yogurt sales in the u.s. rose by 48%. turns out greek yogurt is not only good for you but watery by-product, whey, is a source of power. generating 350 kill oh watts. he is expert at converting