 |  Source: EPA The U.S. Greenhouse Emission by Sector (1997) All we need is a good economic depression to be environmentalists! |
Industry:
Industry is one of the major contributors to CO2 emissions. Here we include utilities (those sites that produce electricity) and other energy intensive industries such as cement, steel, and paper manufacturing for a few examples. Goods are being made because we want them!
Transportation:
It is not just the movement of the populace around the country (about 13,000 miles per car per year) but also all the movement of goods and services. We don't make cars in State College so they have to be brought to the market place (and all their components need to be transported to the assembly plant). Banana's, oranges or the exotic fruit from around the world are delivered to the supermarkets and dining establishments. To serve us! We are in a market driven economy. We make stuff because we can sell it (at a profit), if no buyers then no more goods will be made.
Commercial buildings:
Commercial buildings such as offices and supermarkets need to be heated, cooled and require security and internal lighting, some of which are open 24 hours a day (I love the service economy that we have in the US!) All of these activities require energy an often as the space is quite large, they will need a lot of energy.
Residential:
Heating (in the NE), cooling, hot water, TV, garage door openers, refrigerators, the list goes on.
Agriculture:
You need to: plow, sow, seeds, irrigate, spray, fertilize, harvest, process and deliver your goods, all using energy. There is also considerable decay at the end of the growing seasons when the unwanted biomass is composted or burned off. All so you can get a Big Mac and fries!