December 03, 2007

Global warming is pushing edges of tropics towards poles: study

The greenhouse effect is causing Earth's zone of tropical climate to creep towards the poles, according to a study whose release on Sunday coincided with the eve of a major UN conference on climate change.A recent comment on digg says: Logic would dictate that this band has been increasing since the last Ice Age. There is no reference to the extent of the tropics in previous interglacial periods but again logic would dictate that it is farther north and south then today as global temperatures were higher than today.Evidenced by the changing to boreal forests in the northern hemisphere from tropical ones that were there during previous interglacial periods. This is not a scientific finding, it is a statement of common sense.

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