On Our Own Two Feet

Have you ever wondered when and how we started walking? Well this question has been around for many years and we are still missing some key elements to confirm it. Walking upright on two legs is a very rare characteristic that we have and many other animals don't. Although we know that walking upright is very old it came before our increasing in brain size. One idea that most people get wrong is that a chimp isn't are ancient ancestor but it has shared a common ancestor. Even thought we do share common characteristics, they are still not our ancestors. One of our most know primate are the afarensis which lived half way between us and chimps. We all have a hole at the back of the skull that they use to tell a difference for us that hole is horizontal and since chimps walk on 4 legs theirs is slightly curved. For the afarensis the have a horizontally facing hole which shows they walked on two legs like us. Afarensis weren't the first one to walk on two feet their were many more old up to 6 million years old. Scientist were shocked when they heard this since they thought it was the opisite that our brains got bigger then we started walking.C.Owen has one of the most known theory that stats that they walked on two legs so their arms would be free so they could carry food or tools.They are still trying to find why we stared walking but the important thing is that we walked and that made a big difference.