from The Conversation
– this post authored by Peter Horton, University of Sheffield
What does a staple food such as bread have to do with global warming? For a start, to make loaves on an industrial scale, you’ll need powerful milling and kneading machines and a huge oven, heated to 230℃ or more. This uses a lot of energy. The flour, yeast and salt must also be shipped in and, finally, the finished loaves are delivered to stores – all in trucks powered by petrol.