i think that the problems you mention (overpopulation, environmental damage, global warming, limited resources, etc) are the most severe crises facing humanity today. however, you are oversimplifying them somewhat. it is not, for example, necessarily correct to simply say that as resources become depleted, people will die. in actuality, the situation is extremely unpredictable. it is impossible to say with certainty what exactly will occur, but the more likely cause of the reduction of the quality of life is that absurd human growth simply stretches beyond humanity's capacity to provide for everybody.


in terms of simply killing people now to avoid this threat, it is not a new idea and it would work on a number of levels if seriously considered, but it will never be implemented for obvious reasons.