In larger cities, there are now businesses that collect the cooking fats from restaurants and reprocess them, though I don't think they're allowed to be used for cooking purposes.
Lincoln recently enacted a ban on corrugated cardboard in the landfill, so when people started cleaning out their garages as the weather warmed up the city recycling centers were overwhelmed by the amount of corrugated cardboard that was dropped off.
I've seen too many stories that say that much of what we recycle winds up in the landfills anyway, because there's no market for it.
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