Bill, I won't be able to add much to this discussion but I do find it very interesting.
I've heard scientists say that a 2 degree rise in temperature will cause the melting of the polar ice caps and the rise of the oceans, possibly affecting towns along coasts.
I also hear that we are currently living in an ice-age.
twinc has made a very good point. The universe is expanding, the sun is gettng farther away, not closer. Plus we have this cloud cover or gas cover that does not allow the sun through. For example, auto gas emissions. I'm not very scientifically inclined, but if all the above is true, HOW could the temperature be rising?
One of the answers could be because heat cannot escape from this "dome" we've created. But then, neither would heat be coming through.
I don't trust scientists 100%. That I'm sure of. They change their mind about things all the time. Do you remember when eggs were good for us? And read meat?
My two cents...