Can we draw the following hypothesis from the context?

Context:

Even the overall target referred to in the November 12 statement was put in doubt just eight days later-this is how permanent these commitments are-when the Prime Minister implied to Premiers Tobin and Klein that in his misguided desire to look better than the Americans on this issue, perhaps a new target should be adopted by lowering GHG emissions to 1990 levels by the year 2007.

Hypothesis: No emissions are labelled "GHG."
No