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The scientists are looking at very recent data such as retreating ice caps, and CO2 concentrations but historical data shows that retreating ice caps are nothing new, and high CO2 concentrations are nothing new either...
But back to the ice caps, historically every 70 or 80 years they retreat then start to come back, it's on the record in black and white on ship's logs taken from Whaling ships and other ocean going vessels ......granted one of the major impacts of this cycle, would be if the Ocean Conveyor current switched off but the Ocean Conveyor has stopped flowing in the past - 8,200 years ago and 12,700 years ago - in an event associated with the start of an ice age. (yes our planet has had ice ages before !!! it's true...)
but lets explode the "if the polar ice caps melt we'll all drown" myth .....melting sea ice will not have an impact on sea levels as it already displaces its own weight in water, you can test that theory yourself by filling up a glass with ice cubes and pouring hot water on them to a fixed level... come back 20 minutes later and low and behold the ice has melted but the water level hasn't changed ...... but why pay attention to hard provable science, when the world is running around like chickens with their heads cut off saying when the ice caps melt we'll drown all the puppies.... I think not
(ice melting from land masses will effect sea levels, but the major ice sheets which are already in the sea won't... just to clarify ;¬) )
But back to the ice caps, historically every 70 or 80 years they retreat then start to come back, it's on the record in black and white on ship's logs taken from Whaling ships and other ocean going vessels ......granted one of the major impacts of this cycle, would be if the Ocean Conveyor current switched off but the Ocean Conveyor has stopped flowing in the past - 8,200 years ago and 12,700 years ago - in an event associated with the start of an ice age. (yes our planet has had ice ages before !!! it's true...)
but lets explode the "if the polar ice caps melt we'll all drown" myth .....melting sea ice will not have an impact on sea levels as it already displaces its own weight in water, you can test that theory yourself by filling up a glass with ice cubes and pouring hot water on them to a fixed level... come back 20 minutes later and low and behold the ice has melted but the water level hasn't changed ...... but why pay attention to hard provable science, when the world is running around like chickens with their heads cut off saying when the ice caps melt we'll drown all the puppies.... I think not
(ice melting from land masses will effect sea levels, but the major ice sheets which are already in the sea won't... just to clarify ;¬) )
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