that conversation with national geographic environmental writer sarah gibbens will be up next. stick with us. we will be right back. ♪ ♪ >> weekends on c-span2 are an intellectual feast. every saturday you will find events from people that explore our nation's past on american history tv. on sunday book tv brings you authors. it is serious television. learn, discover, explore. weekends on c-span2. ♪ ♪ ♪ >> we are up at an important tipping point. what we do matters, and i believe that the 1776 project, that this project is an important historical moment, and we need people to get behind us, we need to make sure that our message reaches white, black, asian, hispanic, everyone. america is a great country and we need to fight for. >> sunday former professor and vice chair of president trump's 1776 commission, carol swain, as our guest on in-depth. other titles include be the people and the fading immigration. join the conversation with your phone calls, facebook comments, texts, and tweets, on book tv. >> this monday, labor day, on c-span, a congressional hearing on workers rights