A few years ago I was taking a tour of a dome shaped house, and the architect explained to me that domes are an optical illusion. Whenever someone enters a room, their eyes inadvertently glance up at the corners of the room to give them the contextual dimensions of the space they're in.
Have you ever wondered why people look the way they do? Why our hands and feet have five digits instead of six? Why we stand on two legs instead of four? It took 350 million years of evolution to produce the amazing machine we call the human body and in Your Inner Fish, a three-part series based on the best-selling book of the same name, author and evolutionary biologist Dr. Neil Shubin looks into the past to answer these and other questions.