So, let me sum this up.
1) Yes, Earth is warming up, as a natural cycle of our planet, and you better hope to hell it doesn't stop anytime soon. Not if, but WHEN it does (and starts to cool instead) you can be guarunteed another Ice Age is heading our way.
2) Yes, the “greenhouse effect” is also real, but it is NOT a man made phenomenon created by our C02 emissions (which make up less than 1/10th of 1% of our atmosphere). This affect is also a naturally occuring event, caused by water vapour, and used to regulate temperature between night and day. Without this "deadly" practice, the average temperature of our lovely, warm 15°C planet... would instead be a bitter, and cold -18°C.
So... as I said years ago, dont fear death by global warming, or the equally ridiculous 2012 mayan catastophe. After all, it's WAY more likely to be zombies or aliens, and it's also just WAY more interesting.
ps. For the Americans, thats an average world temp drop from 59 ºF to 0 ºF .