There are a couple of issues there. One is the whole pollution issue—and I don't think that gets enough attention—where a lot of the sources of pollution are from Asia. Of mercury, we know that well over 50% comes from the Asian region. We do have a global instrument that will be finalized this year on mercury, so we're making progress there. Then, of course, it's making sure the Asian states actually live up to their commitments, and we actually, also, in North America, live up to our commitments. So there are huge implementation issues.
On the shipping one, again, there's probably not a lot one can do if China decides to go through the northern sea route. Over the top—again, that's maybe where you need some discussion, engagement, in the future and maybe forward, to allow that happen. Again, that can happen in many ways. It can be delegations from Canada, it can be delegations from China here, informal; there are many ways that can happen. Observer status within a council may be another way that one would get some dialogue going. But I think it has to be dialogue in the future.
My sense is it's not going to be over the top in the next decade. The latest studies that just came out say somewhere around 2040 to 2050 maybe over the top. Then we hear the latest predictions. Predictions are very difficult to track.