In Heat, a visiting inventor discovers just how useful the island’s mammoth population is in keeping things warm one freezing winter day on Mammoth Island! The warm-blooded creatures help heat water, press clothes, warm beds and keep the village sauna hot and steamy. Heat is energy that comes from the movement of the atoms and molecules that make up everything around us. The inventor reveals that heat can travel from place to place in three ways: conduction, convection and radiation. And he also reveals his amazement at the islanders’ ingenious use of mammoths to keep warm!