The Scientific World of Sleep and Dreams. We've slept for half of our entire lives and yet we still don't really know why or what is happening when we are comatose in our beds. So, delve into the brain with me and learn about the science behind all things dreams and why you really, really need sleep. Or you might go a little crazy. This show was broadcast on OAR 105.4FM Dunedin www.oar.org.nz