http://www.canada.com/topics/technology/...
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7 months ago
Shame many people did not read my question. I said CAUSED not CONTRIBUTED. http://www.americanpolicy.org/un/thereis... 0% 0 Voteshttp://technocrat.net/d/2007/12/7/31301
The existence of this former lake was first established back in the 1890s and has been intensively studied ever since.
http://www.lib.ndsu.nodak.edu/govdocs/te...
http://www.cloudnet.com/~edrbsass/agassi...
To quote from the story you link to:
“A British scientist has found evidence linking the catastrophic collapse of a glacial ice dam in Canada more than 8,000 years ago and the rapid spread of agriculture across Europe around the same time.”
“The dramatic discharge of freshwater from prehistoric Lake Agassiz - which covered much of Central Canada at the end of the last ice age - has long been blamed for altering global climate patterns and raising sea levels around the world by at least a metre in a matter of months.”
“The rise in global sea levels 8000 years ago is in-line with current estimates for the end of the 21st century. Professor Chris Turney continued: %26quot;This research shows how rising sea levels can cause massive social change. 8,000 years on, are we any better placed to deal with rising sea levels? The latest estimates suggest that by AD 2050, millions of people will be displaced each year by rising sea levels. For those people living in coastal communities, the omen isn%26#039;t good.%26quot;
http://www.sciencedaily.com/releases/200...
This is a well known event, an anomaly if you like. It has some relevance to today in that it demonstrates what might happen if a large amount of fresh water (from the melting Arctic) enters the Gulf Stream in a short timescale.
The only new thing here is that these researchers are linking human movement in Europe to the change in climate this event brought about.
There is another school of thought about the origins of the flood mythology that is widespread in Middle Eastern mythologies that they originated with the flooding of the Black Sea when the Mediterranean broke through a narrow barrier separating the two in 5600BC. This also caused major migrations and spread agriculture further afield in the middle east and eastern Europe. It also caused conflict as the migrants moved into already inhabited territories.
http://en.wikipedia.org/wiki/Black_Sea_d...
http://www.lexiline.com/lexiline/lexi142...
A number of things can affect climate, including CO2 concentrations, Milankovitch cycles that cause earth to enter into and come out of ice ages (the first of the present series of ice ages, where ice sheets advanced and retreated across the northern hemisphere, only began three million years ago. But the Earth%26#039;s tilt and wobble altering the amount of solar energy only account for 5 degrees of temp. change, the rest can only be accounted for by accompanying falls and rises in CO2.) and so on.
A great deal is known about all of these, pity you don’t read many earth sciences, paleoclimatology or paleoarchaeology books.
Is there a greenhouse effect? Take two airtight glass boxes, each with a thermometer. Place side by side in sunlight. Add a little CO2 to one and its temperature inside will rise higher than the other.
You can do the above in a school lab. The physics and chemistry of the greenhouse gasses and how they interact with the electromagnetic spectrum are well known and demonstrable. 0% 0 Votes
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