... we cannot rule out the possibility that the changes of recent decades are part of a natural rebound from the 'Little Ice Age' that followed the medieval warm period and ended in the 19th century.

Truly environmentalism has displaced economics as the dismal science.

The Intergovernmental Panel on Climate Change's (IPCC) new Summary for Policymakers is a political document that downplays assessments of uncertainty from the scientific reports. It omits much contrary evidence. In several cases, it even disagrees with the reports on which it is based.

A sensible climate policy would emphasize building resilience into our capacity to adapt to climate changes - whether cooling or warming whether wholly natural, wholly man-made, or somewhere in between.