Scientists Warn of Global Cooling. Tasmanian Scientist John Daly [ http://www.john-daly.com/ ]  has warned that the Scientific Data collected on Antarctica [SEE the NASA Godard Institute  http://www.giss.nasa.gov/data/update/gistemp/station_data/ ]  clearly confirms that Antarctica is cooling by degrees and that Ice is accumulating. This accumulation has resulted in the breakup of several huge Antarctic Ice sheets.

Antarctica is one huge glacier, moving slowly from the center and falling off the edges as ice accumulates, the cooling of the climate there seems to have accelerated this process.

Antarctica is a sensitive indicator of the Earth's weather and this cooling is evidence that Earth is entering a new Ice Age and drastic measures must be taken to avoid this impending catastrophe.

John Daly and thousands of other Scientists [ http://www.oism.org/pproject/s33p36.htm ] point out that the computer models on which The Kyoto Protocol is solely based do not guarantee that dramatically increasing the burning of fossil fuels will cause Global Warming to counteract the ice age and that other measures are urgently needed to mitigate this impending Global disaster.

( In case you think I'm serious - this is a satire on the global warming rubbish put out by the greenies - Antarctica is cooling - but nobody knows yet what the world's climate is doing - it remains completely unpredictable.
Ice shelves have broken off Antarctica in a continuum for millions of years.)

More
Scientist Forced to Recant by the Green Inquisition

This character is abusing some of our natural uncertainty to further an anti-environmental agenda. Yes, there's doubt that global warming is real, but the scientific conventional wisdom at this time is that global warming is real, and should be treated as such.

Even if it's not entirely proven, that's no reason to keep burning fuels excessively and using ozone depleting gasses. These things cause other problems, like local pollution, and increase our exposure to national security problems (9-11 was about oil producing nations).

The problem with the so-called "left" (as well as many "libertarians" on the right) is that some are so quick to embrace contrarian viewpoints as truth, simply because they are the opposite of what the powers-that-be support. It's a simplistic thing, to brand power and authority as "evil" (perhaps because of fear of authority) and reflexively rail against it. (I happen to think concentrations of power are bad, but the ideas put forth by people in authority are not usually bad... they are just coercive.)

There are other approaches to finding "truth" (or, your own truth). You can clarify your value system, and use it as a moral compass. You can be existential, as i did above, and base your decisions on what kinds of action can be taken, rather than focus on finding the a perfect "truth" before acting. You can be a fundamentalist (like a devoted marxist, or a libertarian neoliberal), or the opposite (like an apolitical postmodernist, or an atheist scientist... are these empiricists?). Or, you can mix and match as needed.