Science in our Environment: Communications

Talking on the phone, text-messaging, chatting on the internet and emailing-today, there are many ways to send and receive information! But there was a time when communicating was not so easy. In fact many thousand years ago, humans did not even know how to speak! Join the ever-inquisitive Teri and the immensely knowledgeable Green Genius in their attempt to trace the journey of communication in this book.