GR: There are reasonable alternative suggestions for our main problem, but the fundamental fact is that all of them–climate-change, food production, over-consumption, wildlife loss–would be more manageable if there were fewer people. Perhaps climate-change is the scariest because it has the potential to wipe out most living creatures on Earth. From a wildlife point of view, however, this potential makes climate change desirable for its potential to eliminate the human species. It’s a gamble. Winning requires two things. First, global warming eradicates humans, and second no equally destructive species arises in their place.