I took my kids to see the dinosaurs in the Smithsonian yesterday. As I was wandering around, I came across a surprising exhibit on the ice age that noted the following:
Initiation of glacial conditions may be triggered by surprisingly rapid climate changes. Therefore, the minor global cooling trend of recent decades…is being carefully watched and studied. Already the effects on food production are severe in many parts of the world….We are now in a relatively warm period (“interglacial”) following one of several major glacial periods. It is not certain when the present interglacial period will end but…imagine the impact of another full scale glacial advance like that just a few thousand years ago!
Clearly, the Smithsonian needs to update some of its exhibits but when they do so I hope they note that the “scientific consensus” on global climate change has been much more variable than the climate.