[quote=@Host] When we get to that point. We're nowhere close. Antimatter is decently understood at this point. It's simply particles on opposite paths and the like; you can look it up. The fact is that we have quite a bit of time before the planet is uninhabitable. Several hundred years at least, with new advances in renewable resources. However, I believe humanity (sans rapture) will easily destroy itself within a hundred years. If you're referring to overpopulation, it isn't particular a major ordeal at this point; we simply need to expedite food production, which can easily be done. There is a long way to go before Earth is unsustainable. [/quote] >In large part because we stopped investing in it. Bleh. Anywhere as soon as our lifetimes. Not even counting the almost inevitable nuclear war coming up, not enough countries are doing renewable resource advancement, and if we get a republican president then that's a guaranteed stop in pretty much all progress on it in the us. On overpopulation, we're already starving half the world, and people are multiplying exponentially. We'll have a billion more in a generation or sooner, we don't have enough land left for housing or food, and any land we do take is further harming the environment. Again, as soon as our lifetimes we could run out of planet. The sooner we get to work making mars livable to some degree, the sooner we can go into livable planets outside the solar system, and the sooner we can stop worrying about needing to limit population. Bonus points if we can get rid of some of the class disparity across the planet so we'll have less starving or dying of disease, and perfect score if we can get a peaceful easing into anarchy like I dream of. Obviously not likely by any stretch, but hey, it solves all our problems.