There are a couple of ways to visualize how we contribute to CO2 in the atmosphere through our daily routines.

One is with a graph--the infamous hockey stick made famous in Nobel Prize winner Al Gore's documentary.

What I like about PV is that it doesn't release CO2 during operation.  Besides avoiding expensive, and dirty power, costs, it is clean.  But graphs don't work for everyone.

The other, perhaps more compelling, is this Australian advert:

Burning fossil fuels releases CO2 trapped eons ago.  There are better ways to maintain our productive lifestyles--PV being one of them.