Some climate damage already irreversible

http://news.yahoo.com/s/ap/
20090126/ap_on_sc/
sci_greenhouse_irreversible_damage

The above article says that already our climate will continue warming until the year 3000 AD even if all new carbon dioxide was stopped from going into the atmosphere completely now.

So, I guess 76 degrees Fahrenheit average temperature just might happen at the north pole by 3000 AD before the temperatures start going down again. Building houses underground where temperatures remain constant around 60 degrees Fahrenheit at four feet or deeper in the earth most places might save a lot of energy year around worldwide where doing this is practical.