"A few hundred years ago, extinction as a concept made no sense to anyone. But then fossil finds and advances in geology showed that it's part of life, and a statistical certainty – even for human beings."
(BBC Two, UK)
Fig.1 this animation is from Episode 3 of 6 of Dara Ó Briain's Science Club, Tuesday 20 November at 9pm on BBC Two, voiced by Helen McCrory, animated by 12Foot6, Published on YouTube on 19 Nov 2012 by BBC.