In the places where the fruit came from, people burned down the forest so they could plant more trees that grew the fruit – making lots of nasty smoke and sending all of the creatures of the forest scurrying away. When the trees were burned, they emitted a gas that heated up the air. Then everybody was upset, because they loved the forest’s creatures and thought the temperature was warm enough already. A few people decided they shouldn’t use the oil any more, but mostly things went on as before, and the forest kept burning.