On Our own Two Feet article

Whitt, Stephen. "On Our Own Two Feet." Oddysey: Adventures in Science Oct. 2009: 26-28. 

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As you most probably know, apes are our ancestors, because they walk on two feet. Well upright walking is very old. 

It started existing hundreds of years ago. As you might know, it was till not long ago a mystery are monkeys or apes 

and the answer turned out to be apes. But in all three skulls there is a little part called the foreman magnum which 

is used for connecting the brain to the whole body. In the mans and the monkeys skull it is in the back bottom right corner and 

in the center of the skull.