next weekend is the 9th annual boston bookfelt and louisiana book festival in bathen riewng. in early november will be a two state capitols look for us at the wisconsin book festival in mads son. and live at the texas book festival in austin. and later next month we'll also be live if from miami-dade college for the miami book fair. featuring smart al franken, best selling biographer walter isakson and katy among many other authors. for or more information about book pair and festivals to watch previous are festival coverage the bock fair tab on our website booktv.org. >> good morning. good morning, and welcome to the new york botanical garden to parking lot library we're are are very glad that you are here many my co-host david scone so on his way director of the -- darvin manuscript project at the museum of natural history joining us soon. special welcome to the other staff members and researchers from the american museum of history very pleased you're here and thank you, thank you. and also to the students and research from fordham university. the pleasure to have you here