coming up, actor and environmental activist ian somerhalder. stay with us.t's always fascinating to find out what prompts individuals to become actors in the first is. was seeingomerhalder what the bp oil spill did to his hometown in louisiana. he has dedicated so much of his time to finding solutions that he is one of the celebrity correspondent for the showtime years of living dangerously. his episode is called ice and brimstone. >> he is part of a new generation of evangelicals trying to change the climate debate. she sees no conflict between her faith and the science of climate change. churchesshe thinks have a moral responsibility to take a stand on this issue. why would you say evangelicals sothis country have been skeptical about climate change? >> i think there is a general skepticism around science. many evangelicals don't believe in evolution. or me it is personal. here is this community that raised me, and i want to believe they could be on the right side of history on this one. tavis: i thought it was just members of congress who wanted to debate

join me next time with a conversation with joseph stiglitz and after that, ian somerhalder. ♪ ♪ >> andns to your pbs station from viewers like you. thank you. ♪ >> be more. pbs. >>> hello. welcome to this is us. i'm rebecca king read. we're on the campus for guide dogs for the blind. these little guys are full of fun. one day they'll learn to be guide dogs and make a big difference in someone's life. today you'll see they're trained, how they impact lives and how this great organization got started. we'll also profile two extraordinary local women, noted doctor sylvia earl, the former chief scientist for noa spent so much time on the ocean floor, and amy chow, a gymnast and member of the magnificent 7, the first american team to win an olympic