I have a solution to a solid 90% of our current problems. The solution? Kill humans.
Nearly all of our problems can be traced back to overpopulation. Genocide? Overcrowded ethnic groups being forced into close contact with each other. Famine? Too little food for too many humans. Epidemics? Too many humans forced into close contact with one another to spread the disease. Environmental degradation? A by product of the pursuit of the huge amount of energy and resources necessary to sustain 7 billion humans. Reducing the human population on Earth wouldn't make these things disappear entirely, but they would be greatly reduced in scale.
It comes across as psychotic to say such a thing, but it would actually solve our problems. Say one human's carbon footprint is X, and therefore the total human population's carbon footprint is 7 billion X. If you reduce the population by 4 billion, suddenly our carbon footprint is reduced by 4 billion X. It means that much less pollution, that much less famine because there's more food to go around, that much less warfare devastation because huge nations aren't competing with each other over excess resources.
Its fairly obvious now that the human population on Earth is currently far to large to be sustainable, and talking about it like this is nothing new. Daniel Quinn, Thomas Malthus, and various others have already discussed this in detail. Every solution we as a species are working on to solve our problems like environmental devastation are focused on sustainable growth. Theres a fundamental problem with this. It doesn't matter what things you have in place to protect the rainforests or to maximize crop yields. In the end, these are temporary measures to alleviate the stresses of a burgeoning population. It doesnt matter how much you reduce one human's carbon footprint. If you keep producing humans, devastation will continue. Sustainable growth initiatives are like using duck tape to seal a gaping hole in the side of your sinking ship.
The only real solution I can see is to reduce the human population. Now this begs the question, how would one actually do this? When I mentioned earlier reducing the human population by 4 billion, undoubtably some people began thinking about the Holocaust x 100, and about the horrors that would entail. If one were to reduce the population in the shortest time span possible, there would be horrors like that brought to life. Spread out over a long term however, such things could be minimized.
Reducing the population in the quickest way would also be the healthiest way for the Earth as a whole. Something like this would have to be carried out in the bloodiest genocide in human history with huge mass killings one way or another. Introducing a genetically enhanced virus would be the most efficient way I can imagine that would also minimize ecological damage.
Short timespan reduction plans also raises the question of who is to be saved? If it is to be carried out in mass killings, undoubtably there will be an uneven distribution. Those in power, those with weapons will live, and those without will not. A virus may be the most fair way of carrying it out: your social status and personal power don't matter to a virus, natural selection would prove to be a random and therefore fair adjudicator of who lives and who dies. I state it matter-of-factly here, but please dont assume that I'm underestimating the horror of what I'm describing here. I'm not advocating mass exterminations.
Population reduction would have to be carried out over a longer term with an international and compulsory 1-child-per-couple law, for the greater good. Having 8 kids per couple was relevant back when a large percentage died before their first birthday, now its not so much. I dont like advocating these things, but I'm facing facts here. The population is too large. Spreading to other planets won't work because there aren't organic things there for us to consume. We have to reduce the human population, or we will face a collapse of civilization and then our population will be forcibly reduced, and not on our own terms. Or maybe thats what the Earth needs in order to recover as an ecological system.
One way or another, we have to bite the bullet in the short term in order to ensure the future of our species.