Stacks of used soap, piled up on top of each other, almost touch the ceiling. Fished in slimy, half-viscous slabs from bathtubs, floors and sink drains in Hong Kong hotels twice a month, these soap leavings arrive box after box in a warehouse, where volunteers fumble around to pick them up, scrape them clean and … Continue reading Soap cycling: Never mind the slime, rescued soap bars can save lives