Although carbon dioxide is the better - known greenhouse gas, methane is up to 30 times as potent in terms of the heat trapping that powers global warming. (natureworldnews.com)
But what is good in terms of heat loss and energy efficiency, may not be so good for the health of those who live and work there. (sciencedaily.com)
I was only thinking in terms of the heat transfer and temperature changes, and have not thought through the implications for sea level rise. (skepticalscience.com)