You Did It First

Should those who, in the past, contributed more to climate change have to contribute more towards fixing it?

I don't think that contribution to climate change should necessarily relate to how much a country ought to do to fix it. I think that there is a correlation, in that a country that contributed greatly towards climate change, likely has the resources and ability to contribute towards helping fix it. I think that a country should contribute as much as it can to fixing it. If a country once contributed largely to climate change, but is now a third world country, or no country at all, they obviously don't have to contribute as much. To me, it seems silly to dally when something so important is on the line; I don't think we ought to bicker about who ought to contribute more because they caused more damage - it's a childish game comparable to "you started it." The situation is important enough that, simply, every person in every country ought to contribute as much as they can in order to fix the problem.