如果我们不这么厚硫磺柴油在燃烧the marine engines that we’ve got, what could we actually do with it?

We put this question to Tristan Smith from UCL...

I think that's a really good question. I mean, we could build more roads I suppose, but that doesn't really sound like a very good thing to do so. What the refinery would actually do with this by-product of the refining process of the heavy crude is not particular clear and I think it's something that they would probably have concerns about too. Who's going to actually take the stuff off their hands if the ships aren't consuming it themselves. The ships are basically the last industry that's still using it as a fuel and there are no sort of major takers left in the world at the moment.