New York Times: Every year, Americans dispose of about 1,000 pounds of garbage apiece the coffee grounds, takeout containers, candy wrappers, used Huggies, empty syringes and old sock monkey puppets we entrust to our local sanitation workers and never think about again. Yet those annual landfill contributions, according to Richard Alley, a professor at the Earth and Environmental Systems Institute at Penn State, are so much pocket lint compared with another sort of waste we produce: the nearly 40,000 pounds a...