[Vigilanteman]

If global warming was a real threat, we'd be building this:

Qattara Depression

If Greenland melted down completely, 88% of the excess water produced could be contained by flooding the uninhabited Qatarra Depression in northwest Egypt, producing hundreds of miles of valuable lakefront property, generating electrical power as water flowed from the Medditerranean to the depression and potentially turning much of the surrounding Sahara Desert into arable land.

It took Greenland 18,000 years to accumulate as much ice as it has now. How long do you think it will take it to melt?

[palmer]

If Greenland melted down completely, 88% of the excess water produced could be contained by flooding the uninhabited Qatarra Depression in northwest Egypt

The depression is 19,605 km2 by (say) 100 m deep or 1960 cubic km. Greenland has 2,800,000 cubic km of ice which would produce less water, although Greenland's ice is compressed so wouldn't decrease that much. Anyway, you are short by 3 orders of magnitude in that statement. But you're right, even if it did warm, it would take 1000's of year to lose that ice.