. >> host: and now we're hen booktv we're joined by professor gale pooley, co-author of this book called "superabundance: the story of population growth, innovation, and human flourishing on an infinitely bountiful planet." professor pooley, what you mean when you talk about superabundance? >> guest: first of all thanks for giving me the opportunity to share what we discovered in our research. the idea of superabundance, it really occurred to us when we were looking at this original gap between julian simon and paul ehrlich. every milbank in the 1980s you had paul or liquid written a population book and it was his book that painted this dystopian future that things were going to crash in england wouldn't exist and we're going to starve. there were some economists that picked up the book, read it, initially thought that they become a model sounds like a make sense but me i should go back and look at the data and see what the data say about resources, how abundant resources are. as economists we look at the price of resources. if something is running out it should be getting more expensive