Hopefully everyone has seen "An Inconvenient Truth" very moving film, when the far right tries to discredit this work, it's totally laughable at the pitiful attempt made to slander his work. Make sure to see the "trailers" in this movie as data more recent than the shooting of this film is shown.
A bit dated perhaps but nontheless a "must see" by everyone on the planet. Copy & Paste this link to view.
http://video.google.com/videoplay?docid=8847562857479496579# 93 min - Mar 30, 2009
What follows is an abbreviated c&p from the National Geographic Article ->> Begin Quote
" Al Gore's "Inconvenient Truth" Movie: Fact or Hype? Stefan Lovgren
for National Geographic News
Most scientists agree that the Earth is heating up, due primarily to an atmospheric increase in carbon dioxide caused mainly by the burning of fossil fuels such as coal and petroleum. But how accurate are some of the scientific claims made in the documentary?
In an attemp to clear the air, National Geographic News checked in with Eric Steig, an earth scientist at the University of Washington in Seattle, who saw An Inconvenient Truth at a preview screening.He says the documentary handles the science well."I was looking for errors," he said."But nothing much struck me as overblown or wrong."
Claim: According to the film, the number of Category 4 and Category 5 hurricanes has almost doubled in the last year. "This is true," Steig said. "There is no theoretical basis for the notion that this is a [natural] cycle." A study published in the journal Nature in August found that hurricanes and typhoons have become more powerful over the past 30 years.
(Read "Is Global Warming Making Hurricanes Worse?") The study also found that these upswings in hurricane strength correlate with a rise in sea-surface temperatures. Experts emphasize that neither Hurricane Katrina nor any other single event can be linked to global warming. "But," Steig said, "the statistics [show] that such events are more likely now than they used to be and will become more likely in the future."
Claim: Heat waves will be more frequent and more intense as temperatures rise. "There's no question about this," the University of Washington's Steig said. "If the average is going up, the extremes have to go up as well."
Claim: Deaths from global warming will double in just 25 years to 300,000 people a year. "The exact numbers are, at best, an extrapolation from [a heat wave that] was experienced in Europe in 2003," Steig said."However, there is no question that that heat wave was a major event and statistically very unlikely to have happened unless the statistics are changing. "Since it did happen, the statistics are changing—that is, the globe really is warming up."
A study published in Nature in 2004 predicted that climate change could drive more than a million species towards extinction by 2050. (Read "By 2050 Warming to Doom Million Species, Study Says." ) "Climate change now represents at least as great a threat to the number of species surviving on Earth as habitat destruction and modification," said the lead author of that study, Chris Thomas, a conservation biologist at the University of Leeds in the United Kingdom.
Claim: Global sea levels could rise by more than 20 feet (6 meters) with the loss of shelf ice in Greenland and Antarctica, devastating coastal areas worldwide. There is little doubt that sea levels would rise by that much if Greenland melted.But scientists disagree on when it could happen.A recent Nature study suggested that Greenland's ice sheet will begin to melt if the temperature there rises by 3ºC (5.4ºF) within the next hundred years, which is quite possible, according to leading temperature-change estimates.
Claim: The Arctic Ocean could be ice-free in summer by 2050. Some climate models are more conservative, suggesting that there will be no summer ice in the Arctic by the year 2100.But new research shows it could take as little as 20 years for the sea ice to disappear."Since the advent of remote satellite imaging, we've lost about 20 percent of sea-ice cover," said Mark Serreze, a research scientist at the National Snow and Ice Data Center in Boulder, Colorado." end Quote