the real climate driver, page-7

"The claim: With respect to air temperature, the climate-alarmist contention is multifaceted. It is claimed that over the past several decades: (a) earth's temperature has risen to a level that is unprecedented over the past millennium or more, (b) the world has been warming at a rate that is equally unprecedented, and (c) both of these dubious achievements have been made possible by the similarly unprecedented magnitude of anthropogenic CO2 emissions, due to humanity's ever-increasing burning of fossil fuels such as coal, gas and oil.
With respect to the level of warmth the earth has recently attained, it is important to see how it compares with prior temperatures experienced by the planet, in order to determine the degree of "unprecedentedness" of its current warmth.

Taking a rather lengthy view of the subject, Petit et al. (1999) found that peak temperatures experienced during the current interglacial, or Holocene, have been the coldest of the last five interglacials, with the four interglacials that preceded the Holocene being, on average, more than 2?C warmer (see figure at right). And in a more recent analysis of the subject, Sime et al. (2009) suggested that the "maximum interglacial temperatures over the past 340,000 years were between 6.0?C and 10.0?C above present-day values." If anything, therefore, these findings suggest that temperatures of the Holocene, or current interglacial, were indeed unusual, but not unusually warm. Quite to the contrary, they have been unusually cool."
From
Craig D Idso and Sherwood B Idso

http://www.co2science.org/education/reports/prudentpath/ch1.php