so i will invite our audience to use the raise hand function toe mail questions to rachel wigly if you're on facebook or to use the q and a function and we'll do our best to call on everyone. i would like to start off co-chair prerogative you have a limited amount of time to share the contents of the book with us. and there are many things from the book that are absolutely fascinating that may or may not be familiar to either historians or to average americans. so as anen anthropologist and not -- if you talk about how you go about doing your research because you not only interviewed people. but as you mentioned a few minutes ago, you traveled to hawaii. you worked at the lab there. and these are absolutely fascinating section in the book, you travel to vietnam with one of these accounting teams. and you spent many weeks firsthand participating in one of these reclamation projects so if you could just talk as a scholar about doing this and various components that allowed you to ultimately tell this story. >> right. so as a sociocultural anthropology imagine this is hope that you can spend