[inaudible conversations] >> well, coming up tonight on c-span, it's part two of our special program looking at the trump cabinet. we'll show you portions of confirmation be hearings featuring education secretary betsy devos, epa add hr.er scott pruitt and others, and that's tonight at eight eastern on c-span. here's a preview. >> i've only got one question today. why is it so difficult for us to figure out how to focus on outcome versus to get so hung up on process? >> senator, i think that's a very good question, and i think we could have a very robust debate in this room about that. but i think that human tendency

is to protect and guard what is because change is difficult, and yet we see the fact that there are millions of students who are simply not getting the opportunity for an equal, an equal opportunity for a quality education. and we try to tinker around from the top, and we try to fix things, but it becomes more about the system, i'm afraid, than it does about what's right for each child. >> do you believe that climate change is caused by the emission, by carbon emissions by human activity? >> senator, as i indicated, you weren't this here during my opening statement, but as i indicated in my opening statement, climate, the climate is changing, and human activity contributes to that in some manner. >> in some manner. >> yes, sir.

>> 97% of the scientists who wrote articles in peer-reviewed journals believe that human activity is the fundamental reason we are seeing climate change. you disagree with that. >> i believe the ability to measure with precision the degree of human activities' impact is subject to whether the climate is changing or whether human activity contributes to it. >> while you are not certain, the vast majority of scientists are telling us that if we do not get our act together and is transform our energy system away there fossil fuel, there is a real question as to the quality of the planet that we are going to be leaving our children and our grandchildren. >> and that was just a short portion of part two of our special program looking at the trump cabinet. you can watch the entire program starting at 8 p.m. eastern on our companion network, c-span. >> this weekend on american history tv on c-span3, saturday

at 7 p.m. eastern, georgia tech history professor emeritus gregory nobles speaks about the influence of early 19 9th century ornithologist, naturalist and painter john james i audubon and how he helped pioneer citizen science. >> the artistic work, of course, but also his fieldwork. he was very, very good at what he did, and he did it with no binoculars, no steel guides, no iphone apps. and the proof here, i think, is in the painting. >> and at eight on lectures in history, professor alan gelzo on the dred scott u.s. supreme court decision. >> what is itemny saying here? -- toni think saying here? -- tony saying here? there is now no restatement, not even the restraint of popular sovereignty on taking slaves into the for stories. >> sunday at 10 a.m. eastern, opening ceremony of the museum of the american revolution in

philadelphia with speakers, former vice president joe biden, historian and author david mccullough, the museum's president and ceo michael quinn, and journalist and author cokie roberts. >> it's my hope that this beautiful new museum helps inspire you to become both active, involved citizens in this very great country. because history has its eyes on you. >> and then at eight on the presidency, author katherine sinly talks about florence harding and the precedent she set as first lady. >> she'd been this dire straits medically, so she could relate to kinds of things that they were going through. now, it was interesting because out of this veterans cause came the veterans bureau, right? this was the first time the united states actually had a bureau, what we would call the v.a. today, to take care of our veterans. >> for a complete schedule, go to c-span.org.

>> a group of 21 american students aged 9-19 is suing president trump over the u.s. government's climate change policy which they claim puts their future in jeopardy. they're seeking a court order that requires the government to quickly reduce carbon dioxide emissions. one of the plaintiffs, 19-year-old college student ty ya hatton and her attorneys, spoke to the commonwealth club of san francisco about the case. this is just over an hour. >> our program tonight is our constitution, our climate and our children. is there a right not to be harmed by climate change? and our speakers tonight are a distinguished group with phil gregory, partner, cogett, petri and mcarthur, llp. tia hatton, youth plaintiff in