[Gayle]

Which glaciers are getting larger and deeper - if as you say, Al only showed the ones that are melting could you give evidence for the ones that are expanding.

Ten of the hottest years in documented history (probably about 150 years) are in the last 14 years.

The tree ring analogy was used with the ice to show how much carbon has gone into the glaciers in the last 40 years. So yes, they can measure accurately how the increase in CO2 has affected things.

In the most simple terms we're chopping down all the trees and so there aren't enough to process the increased carbon emissions. Even on the most basic level I can see that that makes sense.