jon cohen, welcome back to the "newshour".let's start off by talking about this vaccine trial in south africa. you wrote the book about the hunt for an h.i.v. vaccine. what is happening in south africa now? is this as promising as some think snts. >> the aids vaccine is the holy grail, people can get shots, be protected for life, that's the dream. in 2009, a vaccine being studied protected people with a 31% reduction in risk. that's extremely low but it was something, the first glimmer of hope. the vaccine trial in south africa is building off that thai trial. the results from the thai trial were extremely controversial. there are people who wonder why that vaccine strategy moved forward in south africa, and there are south africans who argue strongly this is a great hope for them and even if they get some protection in addition to other protective measures, it could make a big difference. >> brangham: more broadly, where are the successes currently in the fight against h.i.v. and where are they happening? >> clearly preventin

tonight, stephen welcomes sigourney weaver andy cohen and a performance by pilobolus. featuring jon batiste and stay human. and now, live on tape from the ed sullivan theater in new york ( cheers and applae ) >> stephen: nice to see you. ( cheers and applause ) ( cheers and applause ) >> stephen: welcome! thank so that's so nice of you. please have a seat, everybody. you're too kind. thank you so much. welcome to "the late show." i am your host, stephen colbert. ( cheers and applause ) very nice, very nice. i suddenly am very affectionate toward you, too. now, there's no getting around it, today, donald trump was named "time's" person of the demands a recount. you gotta admit, this is a huge honor. "time" is america's premiere magazine about things we're running out of. ( laughter ) and let's face it, trump dominated the news this year. the only person who came close was hillary clinton, who sadly had to sete for the cover of "upstate woods wanderer." that's good. she looks happy. she looks she's fine! she's going to be fin check out trump on "time's" cover. i can understand why he

tonight, stephen welcomes sigourney weaver andy cohen and a performance by pilobolus. featuring jon batiste and stay human. and now, live on tape from the ed sullivan theater in new york city, it's stephen colbert! ( cheers and applause ) >> stephen: nice to see you. ( cheers and applause ) ( cheers and applause ) >> stephen: welcome! thank you so much, everybody. that's so nice of you. please have a seat, everybody. you're too kind. thank you so much. welcome to "the late show." i am your host, stephen colbert. ( cheers and applause ) very nice, very nice. i suddenly am very affectionate toward you, too. now, there's no getting around it, today, donald trump was named "time's" person of the it, today, donald trump was named "time's" person of the year-- unless, jill stein but grandma, we useo charmin ultra softsoft. so we don't have to wad to get clean. mmm, cushiony...and we can use less. charmin ultra soft gets you clean without the wasteful wadding. it has comfort cushions you can see that are softer... ...and more absorbent, and you can use up to 4 times less. remember, that's

jon: they should have done what carl icahn did. futures in focus, we are going to turn to crude. .e spoke with michael cohen he gave a bullish outlook7. --prices will average dollars. on average higher in the first half than the second half. what we are going to see in the first half of the year, you will see refinery runs increase. demand for crude will increase. at the same time, crude supply will remain level. bob.joining us is a bullish outlook out there. what kind of a market do we need to see to get us to $70, about $20 from where we are now? bob: that would be a utopia of demand to get to 70 dollars. we are pricing in a rosy view on demand. how much stimulus, if any is given back to the oil companies in terms of tax breaks on a general basis, or anything that would be energy specific. the demand side won't play out in 2017 until late in the fourth quarter. a lot of talk in the production industry about china building a strategic reserve. arele i talked to say they done with that. we might have demand surprises. supply-wise, you will see a wash in supply in q3. have plentyducers of room to hedge, but you see some pockets of ba