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"In 2001 NASA scientists published a major study based on observations by satellite and aircraft. It concluded that the margins of the Greenland ice-sheet were dropping in height at a rate of roughly one metre a year.
Now, amid some of the most hostile conditions anywhere on the planet, Carl Boggild and his team have recorded falls as dramatic as 10 metres a year - in places the ice is dropping at a rate of one metre a month.
The glacier we visited - the Sermilik glacier in southern Greenland - is so volatile that one automatic monitoring station was lost into a yawning crevasse. Between a maintenance visit in May and our visit this month, new cracks had opened up in the icy surface and we had to help shift one of the devices to a safer position.
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Dr Boggild is all too aware of how easily he could be accused of jumping onto a climate change bandwagon. But he is adamant that the results he has gathered so far are reliable. "We can say for certain that the rate of melting has increased and we can say for certain that the height of the ice-sheet is falling, even allowing for increased ice-flow. "There is no doubt that something very major is happening here."
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http://news.bbc.co.uk/1/hi/world/europe/3922579.stm