'Cash for trash' program raises people's awareness

Every few days Liu Ying carries a bag of vegetable peelings and other kitchen waste to a small office and trades it for credits, rather than disposing of it in a trashcan.

"The people weigh it and then give me credits I can exchange for household items, such as toilet paper and soap," said the 65-year-old resident of Beijing's Chaoyang district.

"It's not trash anymore."