If it comes down to a debate on whether the ice sheet is the victim of too much CO2 in the air or has been zapped by space aliens, I think the latter is more likely.
It reminds me of the time I tuned into Art Bell at about 2:00 am in the middle of a debate between two guys. The first guy was a nutcase who denied astronauts had ever been on the moon. The 2nd guy was much more rational and debunked (or maybe bunked) every one of the nutcase's tin foil hat arguments. He seemed very intelligent - until he got his chance to put forth his idea. He argued we had very well indeed landed on the moon, and there discovered a civilization living under glass domes-- which the government had kept a total secret all these years.
If only the goreball warming nutjobs were relegated to Art Bell -- instead of invading my back pocket.