im surprised only patrickl picked up on that. the pic is of a US hydrogen bomb test. those little black lines are decommisioned warships lined up around the exposion to gauge the effects of the explosion. a hydrogen bomb is the simplest form of fusion. a nuclear device is used to compress hydrogen atoms together (more or less) so they fuse. the release of energy is much, much greater than the energy of the fission bomb used to detonate it.
'cold' fusion is a dream. nowadays i hate to say 'never' but- NEVER! how can you possibly do fusion in a controlled way, without using MORE energy than you put in.
besides, we already have the technology to collect fusion energy from a source that puts out millioons of hydrogen bombs worth per second
