Climate change and global warming are not the same thing. Human industrial activity is causing a rapid buildup of greenhouse gasses. This is causing the planet to warm. That's global warming. The global rapid increase in mean temperature is causing climates to change as more and more energy is shoved into the system, historical temperature regulators like the gulf-stream slow, move, or just change, reflective snow melts, permafrost melts releasing more GHGs, suboceanic clathrates collapse due to increased water temperature (also releasing more GHGs), and so on. These changes lead to things like "arctic vortexes" and regional drops in temperatures as well as other weather extremes. But the overall global trend is increased temperatures.
So to sum up:
1. Humans are causing global warming.
2. Global warming is causing climate change.
Global warming and climate change are related but they are not the same.
Increased levels GHGs are also causing the oceans to change PH, becoming more acidic. That's almost as serious an issue as climate change IMHO.