The nerve in a giraffe's neck goes within an inch of the larynx. It is something that no engineer would count as an answer, he says. The whole idea and evolution 'is it's bottom up' - Neil Kinninmont. Every stage has to work at every stage: piston engine becoming jet engine.
Our evolutionary journey concludes with Neil deGrasse Tyson, Richard Dawkins, Bill Nye, Eugene Mirman, Jim Gaffigan and Maeve Higgins, recorded live at the Beacon Theatre in NYC.
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