We often hear from the Global Warming Nazis that the Medieval Warm Period and the Little Ice Age were restricted to parts of the Northern Hemisphere. Eg the IPCC and some gobbledy-gook from UNSkeptic Science.
However peer reviewed papers say other wise.
A recent paper by Datsenko et al published in Russian Meteorology and Hydrology
"It follows that the statement of the latest report of the Intergovernmental Panel on Climate Change about the unprecedented nature of the current warming is unjustified."