Can eating less meat really tackle climate change?

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 don’t simply eat food straight out of the ground, of course. It’s 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, the world grows about 6,000 calories per person a day in edible crop harvest. That is about three times the 2,000 calories a day that end up getting to be eaten by humans. This would be enough to feed everyone if we shared it round perfectly, which we don’t, so some people go hungry while others eat more than is good for them. Read More…

Can eating less meat really tackle climate change?