Documentary, documentary univer, bbc, bbc documentary, bbc documentary 2015, documentary 2016, bbc horion, space documentary, univers documentary, science, science universe, science documentary, horion , Full, bbc documentary full, hd documentary, full hd, br Professor Alice Roberts is making a new human being - she is pregnant with her second child. But before he is born, she wants to find out what makes a human, human? What is that separates us from our closest living relatives - the chimpanzees? br br We share 99 of our DNA with chimpanzees and yet from the moment of birth, our lives are completely different.