Global Warming 101BackGlobal warming could do more than just melt polar ice. It could change our maps, and displace people from cities and tropical islands. See all National Geographic videos: http://video.nationalgeographic.com/video/?source=4001 Channel: News & Politics Uploaded: May 18, 2007 at 8:19 am Author: NationalGeographic Length: 0:03:03 Rating: 4.09 Views: 273,692 Tags: Global Warming 101 Environment Weather national geographic Video Comments: nancidrew4 (Tuesday 2nd of December 2008 11:41:21 PM)
NEW ...
climatesafety. org
Following the record 2007 melt in Arctic summer sea ice extent, 2008 saw a record low in sea ice volume. Arctic climate scientists are now predicting an Arctic ocean ice-free in summer by 2011-2015, eighty years ahead of predictions made by the IPCC....
An early Arctic melt will cause additional heating, as a shrinking ice cap reflects less sunlight into space; additional greenhouse gas emissions, as the ensuing regional warming melts frozen permafrost; ...
nancidrew4 (Tuesday 2nd of December 2008 11:41:35 PM)
... and additional sea level rise, as the Greenland ice-sheet comes under increased temperature stress.
Furthermore, the Arctic melt is taking place in the context of faster change in the climate than the IPCC have predicted. It is clear that the IPCC's predictions of future sea-level rises are underestimates. Potential predicted sea level rises would put us in the region of impacts orders of magnitude greater than any we have seen to date. Carbon sinks -- which provide the Earth's natural ...
nancidrew4 (Tuesday 2nd of December 2008 11:42:21 PM)
... capacity to draw carbon out of the atmosphere -- are degrading as temperatures rise and ecosystems are destroyed. The Earth's sinks have up to this point absorbed almost half of all man-made emissions -- we may not be able to rely on them to do so in the future. Ecosystems, already under pressure from human activity, are proving more vulnerable to temperature rise than anticipated.
Change is happening ahead of schedule. This suggests that the climate is more sensitive than we thought ...
Stevie5771 (Tuesday 2nd of December 2008 11:19:53 PM)
Most scientist do not think humans are the cause of global warming, look up the oregen petition (i think i spelt the name wrong)
jeunzermin (Tuesday 2nd of December 2008 10:30:26 PM)
this video is really a big shot.
come on guys..
stop doing some ass!
we're educated people right?
why not have some change,
stop abusing our home,
quit smoking!
Gonji (Tuesday 2nd of December 2008 06:03:27 PM)
not enough....war on terror= comsumption of fuel, majority of people use cars that emit carbon dioxide. All nations are planning a nuclear holocaust, we're planning our own extinction. People need to wake up! and give respect to earth that once gave you life on this planet.
acornoyer (Tuesday 2nd of December 2008 02:45:05 PM)
to make a long story short..... global warming has no effect on ovr world. i still tink this earth has at lest 2.5 billion years untill it dies out.
grastog1313 (Tuesday 2nd of December 2008 02:43:01 PM)
Nancidrew - As one who has participated in the peer review process as both reviewer and reviewee, I can attest to your point. Peer review doesn't guarantee perfection, but filters out most of the worthless material - for illustration, one need only compare peer-reviewed papers with the spurious claims abundant in climate blogs. The conclusion we're warming the planet to a potentially dangerous extent doesn't rely on the validity of any single paper but on convergence of evidence from thousands.
acornoyer (Tuesday 2nd of December 2008 02:41:50 PM)
an interesting story.... NOT!!!!!!!!!!!!! global warming is a scientific fraud. i even hear that their starting to turn trash into electricity.
knightofdarkness123 (Tuesday 2nd of December 2008 06:27:45 PM)
So, what would be wring with that, turning trash into electricity!? And do you have any proof on what you are saying, GW is a fraud? And why in the world it be a fraud, who would benefit from it?
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