[gumby]

> is likely that if there were "only" 1 billion humans global warming would have progressed only an 8th fraction of what it currently has.

Unlikely. Most of the greenhouse gasses were released by the wealthy countries. Climate-influenced population-reduction advocates usually focus on high birth rate countries (especially in Africa, hmm), yet eliminating a single birth in North America forestalls the emissions of five people in Africa.

We should be encouraging people to use more (non-fossil fuel) energy, not less.