An interesting graph:
http://www.clearlight.com/~mhieb/WVFossils/Carboniferous_climate.html#anchor147264
Check out the whole article, too.
You know how you can tell there was some real Science involved in putting together that graph?
The fact there is an uncertainty bounds right on the graph.
You rarely, if ever, see any notes on measurement uncertainty with the Warmers’ work. To anyone with any knowledge at all about measurement uncertainty (anyone with a decent engineering or science background), this just SCREAMS “BOGUS!”, especially when we are talking about tenths of a degree for a planetary average temperature from years ago deduced from tree ring data and such.