Global warming is basically a misnomer. The concept of global temperatures rising in the past hundred years or so has been debunked many times now.
However, climate change - other than that caused naturally - is a fact, especially with global weather patterns becoming more and more erratic and local weather patterns becoming more and more extreme as a result of that.
What do you think brings more chaos to a chaotic system? Yes, that's correct, more energy. What kind of energy is involved in global weather? Yes, right again, kinetic and heat. Where does the kinetic energy come from? Oh yeah, thermal differentials. Again, heat. If you've got an alternate explanation for where the energy driving the climate is coming from, we're all interested in hearing about it.