Man-made fusion reactions exist that generate more energy than is required to sustain them?
Please, tell us more. If that was true it would be the biggest news of the century. Even the small steps made by Lawrenceville Plasma Fusion have been huge news and they're nowhere close to break-even.
Edit: Contained reactions of course, bombs don't count.
Yup! Google it – too complicated to “tell you more”. It IS (IMO) the “biggest news of the century”.
It is so big that I may be losing my objectivity. I am guilty of pollyanne-esk opinions because I want it to be true. As other posters have pointed out: ‘The proof of the pudding is in the eating.’
Things do look promising, however. If true, cheap, clean energy would lift the planet out of a buttload of crap. I really, really hope it’s true.