These two figures show former temperatures with major periods of glaciation labeled. The dashed lines are the present global average temperature of about 15° C (59° F). Thus the solid curves show small changes from this average; note that the temperature drops only about 5° C during a glaciation. This has occurred about every 100,000 years, with smaller wiggles in between. That is, there has been a 100,000 year glaciation cycle for the past million years or so, and there may be shorter cycles as well.
The most recent glaciation, 20,000 years ago, is called the Laurentide, and Earth is still recovering from it. This map from the The Illinois State Museum exhibit on ice ages shows the extent of that ice.
The most recent small drop in average temperature caused the Little Ice Age of 1500-1700 AD, which history describes. Mountain glaciers advanced in Europe and rivers like the Thames in England froze solid, which doesn't happen now.
The growth of the ice sheets began about 120,000 years ago as ice built up on the continents in the Northern Hemisphere, especially in Canada and Europe. The largest extent of these ice sheets occurred 18,000 years ago. At that time the largest ice sheets were between 3.5 and 4 km thick. In North America the largest ice sheet was the Laurentide Ice Sheet centered on Hudson Bay with other sheets centered on Greenland and in the Canadian Rocky Mountains. As these ice sheets expanded they grew together, covering Baffin Bay and eventually the Great Lakes and New England. In northwestern Europe the Fennoscandian Ice Sheet began to grow and expand south to cover what is now Norway and Sweden and north to cover the exposed continental shelf. Over time the ice sheet grew to cover Finland and the United Kingdom. This ice sheet extended east to the Ural Mountains where it met the Siberian Ice Sheet. Before the last ice age ice sheets already existed on Antarctica and on Greenland.
"Gore Movie" : Hostel?
Yeah. Like the lecture he was to give last February in New Yor City that was canceled due to a blizzard & 4 degree weather.
What an ASS CLOWN!
Nice review, Tipper.
I dont see how this movie will put any heat on bush it appears from the article to just point out what an idiot Al Gore is. We already knew that.
I think Gore has Global Warming in his pants.
HAHAHAHAHAHAHAHAHA
Wow ... the Dems are in worse shape then I thought
First the Tom Cruise/placenta thread, now this. I think I'm going to be sick.
I live in Canada... I can hardly wait for global warming, I'm too busy freezing my arse off.
The Bush-bashing by The Daily News is truly hateful.
It is amazing that just 20,000 years ago, a sneeze in comparion to the earth's 4 billion years in existance, that much of the midwest was glacier covered. Glaciers retreated off the northern US and most all of Canada in very recent history, and none of that could be blamed on man. Yet somehow scientists can blame man for the glaciers retreating today. It is asnine that these people call themselves scientists.
Right, Gore probably dreams every night of being President. He is a LIAR if he says he doesn't want to be President. We simply cannot afford for Al Gore to lose again.
OMG, these sycophants on the left are extremely dangerous. This author is totally ignorant of the true goals of Gore et al. To destroy Capitalism and push socialism forward. Those who push Global Warming solutions are as much of a threat to our long term survival as the Islamo-fascists. Their goals are the same.
I'll bet. An 80 minute movie that feels like 180 minutes. They should play this movie down in Guantanamo. Those detainees would be ready to spill everything they know by the third showing.
He is master teacher, pedagogue, know-it-all, smarter than most of us, better informed and, having tried for and failed to gain the presidency, has raised his sights to save the world. We simply cannot afford for Al Gore to lose again.
"It's not just that polar bears are drowning because they cannot reach receding ice floes.."
Of course less poilar bears is good news if you're a seal. And more seals is good news if you're an Orca.
Oh, wait... I guess we only care about seals and whales when doing so can be used to browbeat the human race.
http://www.freerepublic.com/focus/f-news/1611870/posts
Kyoto is pointless, say 60 leading scientists
http://www.freerepublic.com/focus/f-chat/1611101/posts
Scientists blame sun for global warming (February 13, 1998)
No way do they expect to get their money back.
I sure hope none of my tax-dollars were used!
If Gore would only shut up (and Dean and Hillary and Teddy and others of their ilk), there would be very little or no global warming.
As a scientist, Doctor Alvin Gore knew that if he were ever to break wind in the Greenspeace echo chamber, he would never hear the end of it.
It's a liberal mantra - and a critique - that Bush uses "fear" to get people to go along with his anti-terror policies, but isn't it "fear" that libs are using to scare people into buying into their global-warming political agenda? As usual, if libs accuse someone of something, you can bet that it is the libs who are most guilty of that very thing.