[disposablezero]

Also, another note:

Waste sorting and recycling regulations need to be continually ratcheted up because a few bins isn't working (ever see the disaster of the composting, recycling and landfill bins at Costco?). Do like Stanford does: have separate bins (up to 5) but also divert more of the waste stream for recyclables, composting, etc. with pre-landfill processing. Left to their own devices, people rarely voluntarily make changes which are vital to more sustainable ecology.

It seems also that at some point in the future, it may become economical to mine landfills for materials when scarcity drives prices high enough.