Should We Be Worried About Global Warming?

Almost certainly... yes. But is it an impending disaster that modern humans are responsible for that will wipe us out if we don't do something soon? I'm not so sure about that, though apparently the latest Al Gore movie will have you believe it (I haven't seen it yet)

I watched a TV program on this a long time ago where this guy was trying to point out that the planet has gone through many natural heating and cooling cycles including past ice ages. He pointed out that global warming has happened before and would happen again even if humans weren't in the picture. Well ok, we are definitely helping it along, would be a bit reckless not to admit it, but how big is our impact really?

"Don't, don't believe what you see. Don't, don't believe what you read."
            - Max Cavalera (Sepultura)

Try reading this: Climate Chaos? Don't believe it ...but don't believe the article either ;-)

Some interesting quotes:
"Sir Nicholas Stern's report on the economics of climate change, which was published last week, says that the debate is over. It isn't. There are more greenhouse gases in the air than there were, so the world should warm a bit, but that's as far as the "consensus" goes. After the recent hysteria, you may not find the truth easy to believe ... The Royal Society says there's a worldwide scientific consensus. It brands Apocalypse-deniers as paid lackeys of coal and oil corporations."

"I'll show how the UN undervalued the sun's effects on historical and contemporary climate, slashed the natural greenhouse effect, overstated the past century's temperature increase, repealed a fundamental law of physics and tripled the man-made greenhouse effect."

"Scores of scientific papers show that the medieval warm period was real, global and up to 3C warmer than now. Then, there were no glaciers in the tropical Andes: today they're there. There were Viking farms in Greenland: now they're under permafrost. There was little ice at the North Pole: a Chinese naval squadron sailed right round the Arctic in 1421 and found none.

The Antarctic, which holds 90 per cent of the world's ice and nearly all its 160,000 glaciers, has cooled and gained ice-mass in the past 30 years, reversing a 6,000-year melting trend."