I think this is something where you "have to be careful what you wish for". If we say we'd like to have cancer (or any other human disorder) cured, are we prepared to accept the consequences of the journey?
For example, one approach to curing cancer may be through nanotechnology. That is one field I can see myself working in, if it weren't for the moral issues it is bound by. What keeps humans from abusing it?
Granted, there have been many things invented or discovered in the past that brought about the same question. Nuclear weapons, for one. But nanotechnology is even more powerful. It has the power to change people at a very fundamental level sight unseen.
For more enlightenment, I highly recommend "Act of the Apostles" by John F.X. Sundman.
Well, that said, I'll put my vote in for cold fusion. I think fusion power plants, if ever made practical, are the way of the future.
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"There are finer fish in the sea than have ever been caught." -- Irish proverb
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