A report on tonight's BBC news highlighted the concerns glaciologists from Southampton University have over the rapidly disappearing ice fields in Norway. The scientists are concerned about the increasing pace at which the ice melts, and what impact this may have on the globe's climate. This is just one of a number of stories from around the world which all point to the same thing-a massive increase in the rate at which the world's reservoirs of fresh water are melting.
For example, The Columbia Glacier in Alaska has retreated by nine miles since 1980 and is discharging 2 cubic miles of ice annually into the Prince William Sound, the equivalent of 100,000 ships packed with ice 150 m long.
However, the difficulty is isolating the differences between long term cyclical changes in the world's temperature (caused by atmospheric and other natural factors) and those which are directly caused by human causes of global warming, eg CO 2 emissions; burning fossil fuels)
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