The latest global warming scare story, based on a NASA press release, claims that Greenland is melting at an "unprecedented" rate:

"The Greenland ice sheet melted at a faster rate this month than at any other time in recorded history, with virtually the entire ice sheet showing signs of thaw... About half of Greenland's surface ice sheet melts during a typical summer..."

-- London Guardian

The "entire ice sheet" is melting! London is doomed! Or, is it? Later, the writer admits:

"In the centre of Greenland, the ice remains up to 3,000 metres deep. On the edges, however, the ice is much thinner and has been melting into the sea."

-- London Guardian

The "recorded history" of satellite observations spans about 40 years. The "entire ice sheet", which is more than 100,000 years old, covers 1,800,000 km2 with an average depth of 1500 meters. Every summer there is a bit of surface melt followed by re-freezing, having a negligible effect on the total volume.

How long would it take to melt this massive sheet of solid ice, larger than the entire state of Alaska and over a mile thick, which receives millions of tons of fresh snow every year, located north of the arctic circle where the average inland temperature is well below the freezing point most of the year?

For comparison, here's a story about a small man-made snowpile a mere 25 meters deep which still hasn't melted even in the mild coastal climate of Anchorage, Alaska.