Who Cares About Carbon Emissions?

Carbon emissions are created all the time, all around the world. So what? Carbon dioxide creates the largest man-made contribution to the greenhouse effect, which is what is slowly, yet persistently, warming our globe. That makes it the most important greenhouse gas out there. It's currently responsible for about 25% of the greenhouse effect. Methane and ozone, the next two on the list, incidentally, don't crack the double digits, so carbon emissions are in the lead, in a bad way, when it comes to greenhouse gas emissions.
We live not only in a carbon-based world, but a carbon emission-based society, and the scope of activities that produce carbon emissions is just huge. Anything involving petroleum, coal, natural gas has a carbon emission ticket attached; that includes all cars and most transportation, the vast majority of our nations' electricity production (about half comes from coal alone), and a whole lot of home heating systems, just as a small snapshot. So if you don't care, you should start to care.