It's questions like these that get lost in all the break-neck pace of 21st century life, and thanks to modern technology and medicine there are rumblings that we somehow escaped Darwin's law of the survival of the fittest.
But can this be right? Really? There's no doubt that the human race is the product of millions of years of evolution, so why are any different now?
To get to the bottom of it all, Alice follows a trail of clues from ancient human bones to studies of remarkable people living in the most inhospitable parts of the planet and the frontiers of genetic research, to discover if we are still evolving and where we might be heading.