On Sat, 24 Sep 2011 14:32:28 -0700, John Smith wrote:

You have this correct ... it would be just as valid to claim this is
just the end of the last ice age, as opposed to this being a "human
caused global warming."

You don't believe the physical evidence; the ice cores; Moana Loa
Observatory?

There has not been this much carbon dioxide in the atmosphere for at
least 600,000 years. That is a bunch of ice ages. Since 1800 the
atmospheric CO2 has skyrocketed, along with the amount of solid
combustion artifacts found in sediment and tree rings, that point to
industrial processes and deforestation as the most likely culprits. What
do you have that refutes this, logically, in an obvious manner we can all
understand?

Please note the largest climate cycle is around 100,000 years, so we have
gone through several complete astronomical cycles and still today's
climate and atmosphere are unique to history.