[MooMooMilkParty]

While you are correct that methane is quite potent, when discussing climatological effects it's not as important as CO2. Especially when discussing ice sheets and sea level rise, the long term (1000+ year) effects are what's likely to reduce Greenland and Antarctica to points where feedbacks will prohibit their regrowth (thus dooming them to complete melt and us to deal with the unfortunate side effects).

Again, not disagreeing in any way, just looking to provide some context in relation to the subject matter in the original post. In fact, I think climate change and environmental stewardship are issues that go hand in hand and should definitely be taken more seriously.