It makes me wonder about this topic too. My thread Thread: Scientists In Shock At Amount Of Methane Gas Being Released In Arctic - Give Dire Warning discussed the fact that methane may end up injuring animals. I wasn't expecting to see things occur this fast from it though...if in fact it is related.

Anybody know what methane will do to the body? I thought it would just lead to suffocation? Not disease and such. But, I guess if you're running out of oxygen over time, you would slowly and surely succomb to things your body would otherwise fight off.