. >> sanders said no to the keystone pipeline and never waffled. he's also the only candidate to oppose fracking, because fracking can endanger our drinking water and threaten our climate. sanders has the most far-reaching plan to fight climate change and build a clean energy future. bernie sanders, people before politicians. >> he's targeting south carolina and minnesota with that ad. is that an ad that can be effective? >> i think so. climate change is an enormously important çissue. it's maybe the defining issue of our -- in the planet right now. so it's huge. but hillary is very strong on that, as well. and you know, and fracking is something that -- because of fracking, we have a lot of natural gas. and because of we have a lot of natural gas, it's replaced a lot of coal. >> where are you on fracking? i was going to say, because it has gotten a lot of -- i've talked to a lot of democrats who are describing it the way you describe it. >> i'm on the energy committee. >> yeah. >> and fracking, it depends where you do it. and if you do it too cl