Vybarr is not only the most fabulously named babble guest we've had, but also the author of TWO incredible books about humans and our environment.His new book - Primate Change: How the world we made is remaking us - uncovers the extraordinary tale of how our environment has changed our bodies, from our eyes and teeth down to our toes, while 2017's Footnotes: How running makes us human reconnects us to our bodies and the places in which we live.We pick Vybarr's mega brain in a wide ranging chat, during which - as well as discovering how the treadmill killed Oscar Wilde - we learn that Dave is in fact no more than 25% Dave.And poo transplants get a mention.Sustainababble is your friendly environment podcast, out weekly. Theme music by the legendary Dicky Moore – @dickymoo. Sustainababble logo by the splendid Arthur Stovell.Available on iTunes, Acast, Soundcloud & all those types of things, or at sustainababble.fish. Visit us at @thebabblewagon and at Facebook.com/sustainababble. Email us at [email protected].