HAZE 2008

[Khoas]

Watch a story on 60 minutes last night. While the predications are dire, there was some interesting facts. One fact is that it was warmer by 2 to 3 degrees in the middle age (around year 1000 ) before the mini ice age occur around the 17th and 18th century.
The other couple of facts is that it is the average world temperature has not increased since 2001 in spite a 5% increase in CO2 in the same period. Another fact is a predited 'hot spot' on the equator is not there.
What does this means? maybe CO2 is not main reason for gobal warming. While the story didn't go into possible other reasons, here few I can think off. Solar output has increased slightly, methane and other greenhouse gas have more influnce than previous thought. On more local scale, the covering the ground by concrete and removal of vegetation will increase average temperature.