Oy.

Given that Polar Bears have survived other times of warm climate (with no or little sea ice) without going extinct, how do these scientists come to the conclusion that they will go extinct in the next 30 years?

The Arctic has not been ice free for at least a million years.

“According to both fossil and DNA evidence, the polar bear diverged from the brown bear roughly 200 thousand years ago; fossils show that between 10 and 20 thousand years ago the polar bear’s molar teeth changed significantly from those of the brown bear.”
http://en.wikipedia.org/wiki/Polar_bear

Please, keep this civil. I will delete comments with profanity.

Lou, you might understand the deniers - like me - if you spent a little time researching the facts. I have been a scientist for 25 years. I have done the analysis and I - like most - yes most scientists - have determined that “man-made” global warming is nothing but political hype and people like you who do not take the time to research the data are suckers. Go ahead purchase all the carbon credits your budget can handle but don’t try to make me contribute.

Lou, global mean temperature? Use your common sense and think about that concept for just a minute. How does one accurately measure the temperature of a planet the size of the Earth over the last 100 years? What about the instrument’s error? It’s calibration? Has the calibration of every instrument been maintained over the last 100 years? Has the environment around the instrument changed over the last 100 years? Is their more concrete? buildings? people? heat exhausts from compressors near the instrument? when was the temperature taken? during shaded times? times of rain? windy days? What about time of day and day of year? Have these instruments been measured at the same time of the day on the same day of the year over the last 100 years? Have measuring instruments been added and if so, where? in cold areas? in warm areas? The Earth is has an EXTREMELY large surface area. How much surface area do the instruments cover? I can go on and on but one quickly sees that “global mean temperature” measurement is no more accurate then averaging the New York City telephone book. The average telephone number in New York is useless. Our measurement of the change in the Earth’s mean temperature over the last 100 years is useless because it is overrun with inconsistencies; thereby, resulting in huge errors. Common sense dictates this. Americans have lots of common sense but it seems that they have turned it off. I equate “man-made”global warming to reports that Elvis is alive.

Correct. There is no room for profanity.

Sir, you are wrong about man-made global warming regardless of the speculated future of the polar bear and to quote wikipedia as if it is the standard of fact is amazing. The other day, while in the checkout line in the grocery store, I read an article in the World News that said that JFK was alive and residing in a special section of the White House.

I see scare tactics here sir. Please state facts not speculation. Gore and the NOAA told us that 2006 would result in the worst hurricane season on record. 2007 is resulting in only a small number of hurricanes. Pathetic experts. IPCC told use years ago that sea levels would rise 20-plus feet over the next 50-100 years. In February 2007, those sea level rises were less then a foot. IPCC put the “hockey stick” temperature plot in their report that was later showed to be wrong. NASA stated that 1998 was the hottest year on record until an error was found and now 1934 was the hottest year. Computer models used for the latest IPCC report discussing the “horrible” effects of man-made global warming conveniently focus only on the last 30 years of temperatures - it ignores the cooling cycle from 1940-1970 -guess this is for maximum negative effect. This emission shows that the “computer models” are bias. Let’s discuss how many scientists supported the IPCC conclusions that man is responsible for global warming vice the number of scientists who simply submitted their data for IPPC report?

Who was burning fossil fuels when the last Ice Age ended 10,00 years ago and the sea level rose 250 feet? Atlanteans?

Isn’t a “changing environment” the driving force behind evolution? The fact the earth does change is the very reason it is a living planet and not a dead one like Mars or Venus. There are vast geological and biological cycles that take place over millions of years that are essential to recycle the essential elements of life. The payoff is that the must change for this to hapen.

How do you work out the “carvbon footprint” of a volcano/

How many people are making a very comfortable living writing reports, doing reasearch, etc into this subject?

Polar bears are drowning, an extremely painful way to go. Polar bears are starving. It is all extremely sad and horrifying, really, and i hope we all learn how to stop this.

Step one might be to admit it exists.

Polar bears are drowning, an extremely painful way to go. Polar bears are starving. It is all extremely sad and horrifying, really, and i hope we all learn how to stop this.

Step one might be to admit it exists.

I never posted on here before so i could not have said this.

STOP GLOBAL WARMING!!

http://209.85.175.104/ search?q=cache:V7R47Yz0AFEJ:www.guardian.co.uk/ uk/ 2008/ jun/ 05/ animalwelfare.animalbehaviour+polar+bear+shot+iceland&hl=en&ct=clnk&cd=4&gl=sg

This polar bear deserve for life but those people just decided to shot it! How ashamed. For me, they never did enough effort to safe this endangered animal. After read the news I am confused: actually who need to be protected here? Is the people or that poor polar bear? Well fact tells the truth…it’s the polar bear that need to be protected. Because in fact there’s no report of that polar bear threating people around there. They said they don’t have tranquiliser at that time, it’s a lie to the public. A vet chief near the town said he has it. They just lazy and prefer the easiest way by just killed it. I don’t appreciate their action at all.

I hope all of us aware and come together to protect this endangered animal.

I am personally against that action taken in Iceland. Because in my opinion, they never do enough effort on how to safe this animal. They just said…uh..oh…we afraid that polar bear will attack people so we decided to just kill it. But for me it’s the same…at the end you still kill in order to prevent another killing…so what’s it? At the end you are a killer. The proper way is that you must not kill it! But make sure you make efforts to move the polar bear to its habitat. By that, there’s no killing.