For this reason, it should not be too surprising if the world goes through periods of natural global warming or global cooling. (globalwarmingsolved.com)
The current IPCC climate models only include one possible mechanism for natural global warming — changes in solar variability. (globalwarmingsolved.com)
People are debating this because there is a supposed natural global warming and a supposed man - made global warming. (dotearth.blogs.nytimes.com)