Global warming VS global cooling

30 Years of Global Cooling Are Coming, Leading Scientist Says
''Latif, a professor at the Leibniz Institute at Germany's Kiel University and an author of the U.N.'s Intergovernmental Panel on Climate Change (IPCC) report, believes the lengthy cold weather is merely a pause -- a 30-years-long blip -- in the larger cycle of global warming, which postulates that temperatures will rise rapidly over the coming years. '' [source]

So what do we really know about the climate? O_o