At the Feeding of the Five Thousand, Jesus miraculously transformed five loaves and two fish into so much food that – even after the huge crowd had taken their fill – there were leftovers. In the biblical story, Jesus told his disciples to “gather the pieces that are left over”, so “nothing be wasted”; they collected 12 entire baskets full. Today, a staggering third of the food we produce globally goes to waste, and preventing perfectly good food from ending up in the bin is a pressing part of the battle against climate change. In the UK alone the food thrown away each year creates the CO2 equivalent of 4.6 million return flights from London to Perth. But long before we knew of global warming, wasting food was condemned from a religious standpoint.