The difference between weather and climate.
A side effect to global warming is increased humidity in areas that are traditionally very dry. See the Andean deserts in South America, the Antarctic continent, and now, no surprise, high-altitude temperate Africa where it regularly gets well below 0°C every winter. Anyway, it seems it wasn't unprecedented, the place does get snow occasionally.
I really fail to see how anyone can still believe there's any doubt about global warming. The science is in. We are experiencing the effects right now. 2016-2017 broke more temperature records worldwide than in any other time in recorded history. What is it about climate-change deniers? It reminds me a lot like religion, "Stuff the science, I want to believe what I want to believe."
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