so the gulf of mexico has been under exploration and under oil development for decades, since the 1950s. and by contrast, you know, the arctic does not have the u.s. arctic anyway doesn t have pipelines. it doesn t have production facilities. so any oil company doesn t just have to find the crude that they want to produce and sell. they need to find a way to get it to market. so they have to build all of those facilities. and that s an extraordinary undertaking. the amount of environmental analysis that would go into it is huge. it s quite costly. so is there a ripple effect to this? shell isn t going to do this. does this mean that no one is going to be drilling in the arctic or is somebody else going to fake a shot at? there are some drilling in other parts of the arctic, the russian airkt, for instance, and there s been some interest in the canadian arctic although that has diminished lately among low oil prices. but for the u.s. arctic it doesn t look likely that anyone s g