I think the 'deniers' now accept that the climate is changing but dispute the cause. We should be able to talk about the changes without it being considered political. I totally agree that we are GARDENERS so of course we talk about weather and climate!
I downloaded the overlay for Google Earth and I can zoom in a bit more. I discovered that I'm on the edge of a small bit of Bsh next to a large section of Aw. Hmmm, it would seem that the difference is whether or not evaporation (high heat) takes more of the precipitation (Bsh) or less (Aw). I have a feeling that this is something that changes year to year.
