the whole demographic is shifting and these are huge issues we will have to deal with more broughtly. we have an opportunity to test out the strategies and the panel is people who have been testing them out. please join me in thanking them for what they do. . >> sunday award winning author and passion for u.s. presidents and the great american pastime, baseball, resulted in a dozen books. including 1920, the year of the six presidents. 1960, lbj versus jfk versus nixon and the fixingf with you e-mails and tweets. sunday at noon eastern on book tv's indepth on c-span 2. >> bill gates said he is concerned about public trends and higher education. a move towards funning constrain constraints. he spoke for about an hour at an event from public and land grant universities. >> thank you. last year when we were talking about who should be the key note speaker at the 150th anniversary celebration of the moral act, we agreed on a first choice, bill gates. someone who would not only help rec night and celebrate the last 150 years and challenge us and work with us in the decades ahead. with his