I'm missing some of this discussion, because apparently everyone moved on from the why to the what do we do.
Nuclear weapons really aren't an option. The reason is simple. The environmental impact, coupled with the massive cost of this, would be too great. Even if we could get past those two points, there are people who would never do this because it's morally dubious.
Education in Africa doesn't work. For every child that can afford to be in schools there is at least one that cannot. As long as superstition and hate are spread from one generation to the next there will be strife. The people who "freed" the ebola victims hopefully aren't motivated by anything but good intentions (read: warlords smart enough to use a sort of biological cleansing solution), but they are criminally un-educated.
What is the solution then? Quarantine, cleansing of exports, and minor fortification of resource extraction efforts. Quarantines allow the disease to burn out, by preventing further infections. It may require armed enforcement, but stopping transmission has to be priority one. Cleansing exports is trickier. The easiest way to do this is either fire or radiation. My money is radiation. A low level exposure to a weak radioactive source kills everything, then goods are stored at a safe location. Just prior to shipping another quick bath is initiated. Everything leaving the ports is cleared, and the setup should be cheap enough to install in every African port. Without any real operational or maintenance costs, you've got sterile non-living exports. Fortification of resource gatherers is a bit more painful. Unfortunately, we cannot help everyone, so those we do help need protection. I'm not saying we don't help those that ask for it, but by fortifying our locations we have areas that can render aide, without sending more people out to contract disease. Hospitals are generally over-run because armed guards don't stand watch over them. Doing so sends terrible messages about our confidence, but this kind of epidemic isn't something to take lightly.
I guess the gist of what I'm saying is to not cut Africa off, and to not use nuclear bombs as a solution. Ebola is frightening, but the scarier thing is that we are guilty of genocides just because there is a risk of the infection passing out into the rest of the world. If nothing else, the bird flu scares should have tempered our resolve to contain and control a pathogen. It should have taught us that humans, and more importantly our infrastructure, are too fragile to take a cavalier attitude towards.
If that lesson is not adequately learned our population may well never reach the predictions economists make. I guess the horrible truth of disease is that it weeds out higher population densities with frightening accuracy, and it does so without regards to wealth or power. Thankfully, this started in Africa and not Europe, China, or the Americas.