In today’s episode, Maddie’s at the zoo to learn about the different ways we communicate, like using our voice to talk or using our hand to wave. She visits the chimpanzee enclosure and learns that a chimpanzee uses its body to make friends too by grooming other chimpanzees. Then she discovers how our sense of taste, smell, hearing, sight and touch help us to understand the world. Our ears can hear sound from far away, but Maddie uses a special machine called a geophone to see how elephants can hear each other almost 10 kilometres away! Maddie explains how our bodies can be used to show when we’re happy or excited, and she uses her special camera to see what the animals do when they are excited or happy too.