'Improbable Destinies' Tracks Evolution's Strange And Wondrous Paths

We spent a day with Jonathan Losos, biology professor and curator of herpetology at Harvard's Museum of Comparative Zoology. He took us to the bowels of the museum to look at the thousands of unique specimens carefully archived there.

His new book, "Improbable Destinies: Fate, Chance, And The Future Of Evolution," looks at how we got to the species we have now.

Jonathan Losos, biology professor, director of the Losos Laboratory at Harvard University, and curator of herpetology at Harvard University's Museum of Comparative Zoology. He tweets @jlosos.