right carbon there are some trade are but once we start to try and reduce carbon emissions we'll be surprised but it wasn't as hard. for. you some questions yes we have a gentleman. over common from the business joins us to tell us more about these two guys again the other two men who've won the oil and exactly tell us a bit more about these mit so william nordhaus of yale university he's called the the father of climate change economics he's been doing this kind of research since the seventy's he's a true pioneer in that field and then we have full roam of new york university he small looking into innovation technological change and how this drives growth they've both been rumored to actually win the nobel prize for a couple of years now and i finally have and i guess it's interesting that he's been working on this topic for such a long time because it gives him