Most of my readers are probably aware of this, but just in case some aren't, global temperature is currently setting records again. May was the hottest May during the intrumental record, and Jan-May 2010 is the hottest Jan-May period on record (graph above). Full detail from the NOAA monthly state of the climate report.
This is where it was most anomalously warm in May:
Looks like the summer is getting off to a bad start for those glaciers in Greenland.