Not to burst your bubble, but with the energy required to actually manage to suspend a device at that altitude and for that long, you might as well just fly it around the globe.
Unless you are extremely wealthy with a lot of time in your hands (Sir Richard Branson) you could actually fly into orbit. On the other hand if you're not extremely wealthy then I am obliged to agree with DavitosanX. Just catch a plane!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.