Climate change is what you should be calling global warming, as it involves both a warming and cooling of certain places around the Earth. That is not to mention that an increase in sea level threatens an endless amount of global systems like the Gulf Stream, and will result in the flooding of low lying land, particularly the Netherlands and many Pacific Islands. Pretty much everything that I'm sure you've been spoon feed at school is supposed to come true if we continue to emit carbon at unsustainable levels. Having said that, NASA have reported that global temperatures have remained constant over the past 15 years, adding uncertainly as to the legitimacy of climate change.