Independent: With the food system accounting for up to a third of global greenhouse gas emissions, anything that reduces its impact will make a big difference to the climate.
It is a system riddled with inefficiencies and waste. Humans dont simply eat food straight out of the ground, of course. Its harvested, stored, processed or fed to animals who are in turn slaughtered and processed and finally packaged and delivered. Each of these stages uses energy, which means emissions.
In very rough terms,...