Since the very first set photos surfaced of this strange and mysterious device speculation has run rampant. There were many people that believed it was an earthquake machine, while others proposed it was nuclear bomb, and that is just a few of the ideas that were bandied about. Now we have the proof and Bane's device is a fusion reactor.
Fusion reactors have been getting a lot of press recently because they offer some major advantages over other power sources. They will use abundant sources of fuel, they will not leak radiation above normal background levels and they will produce less radioactive waste than current fission reactors.
Nobody has put the technology into practice yet, but working reactors aren't actually that far off. Fusion reactors are now in experimental stages at several laboratories in the United States and around the world.
- howstuffworks.com
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The Dark Knight Rises hits theaters July 20th 2012 and stars Christian Bale as Bruce Wayne/Batman, Michael Caine as Alfred Pennyworth, Gary Oldman as Jim Gordon, Tom Hardy as Bane, Anne Hathaway as Selina Kyle, Joseph Gordon-Levitt as John Blake and Marion Cotillard as Miranda Tate.