Oakland, CA, Aug 21, 2009 — If you want to get a sense of how the overall economy is doing, look outside your window the night before garbage and recycling day. Last fall, you'd have seen trucks full of cardboard circling the neighborhood. By winter, the cardboard poachers had disappeared. That's because wastepaper - like other recyclables - feeds into a multi-billion dollar global commodities market that rises and falls just like housing prices and stocks. Amy Standen has more.