Here’s what was important this week… More than you probably ever wanted to know about refrigerators and refrigeration: “Refrigeration is the invisible backbone on which the world’s food supply depends — and given our climate-changed forecast of more extreme weather events, it may yet prove to be its Achilles’ heel.” Oh how I wish this had come true: “All mechanical fridges work by controlling the vaporisation and condensation of a liquid called a refrigerant.