You'll often hear it said by climate change skeptics that there are as many freak snowstorms in the world as there are freak heatwaves, and as such there's no such thing as global warming. Ergo, there's no such thing as human-influenced climate change. They're wrong. Climate change and global warming is not the same thing
Global warming refers solely to the insulating effect of greenhouse gases in the atmosphere, which will retain too much of the sun's heat when they become too dense. Climate change is the disruption to global weather systems caused by the imbalances of gas in the air. While that will sometimes mean hotter than usual weather, it also means snowstorms where no snowstorms have occurred previously. Take this picture, for example. It shows plenty of settled snow on the sands of Saudi Arabia in 2012. It's a nice novelty for the locals, and it looks pretty, but it's not a good sign. Snow shouldn't fall on Saudi Arabia. When it does, something is very wrong.