As North America and Europe face their coldest winters in decades, many climate change deniers are taking the opportunity to do their best Nelson Muntz impression.
Well, as one might suspect, the science behind global warming is not actually that simple. I won't discredit myself by pretending I understand the science, but I will direct you to this US News and World Report article, which gives some explanation. Interestingly, the article avoids the conclusions I initially jumped to: extremes and variability.