If only additional emissions were counted with reference to a stay - home scenario, air travel may well come out as the dominant emissions component. (treehugger.com)
So this is what we call the embodied energy component, or the greenhouse gas emissions component, of constructing a building. (treehugger.com)
However, we did not incorporate a few emission components — probably the most important ones - because of some uncertainties still remaining concerning their constraints. (skepticalscience.com)