Waltner - Toews links our international food distribution system, where we are shipping strawberries and tomatoes all over the world, to
our waste of valuable nutrients in poop and pee, and calls for a «redistribution of nutrients on the planet.»
But it seems pretty clear that small - scale urban farm biogas digestion has great potential for gleaning energy from urban
waste streams, recapturing
valuable nutrients and returning them to the soil, and
of course keeping rotting matter out
of landfills7mdash; preventing both methane emissions and leaching in the process.