that's why I'm saying salt the earth, if you could get something (I don't have the right word so substitute) virulent enough, you could salt the earth, imagine if manhatten and los angeles were made uninhabitable for 50 years, that'd have some nasty affect on the economy...... or washington d.c not a great battlefield weapon, more of a goldfinger take over the world sort of weapon then there is always something like food production
really, we shouldnt be salting the earth, or even doing anything to the earth. in fact, we as humans shouldnt even be discussing fuckin bombs and shit we should be healing the earth! seriously
just long term strategically, I'm not talking as a real world thing, I'm not in favor of the use of any weapon of mass destruction, I'm not even in favour of fuel air bombs, but that's how that would be useful as a weapon, there are weapons and there are potential tools, regardless of how it's weaponized tnt is still in base form a tool, a nuclear weapon was never intended to be a tool, only a weapon, granted nuclear technologies can be used for energies, but that's a different sphere....
Unfortunetely, many people don't care. I would for one, would be satisfied to look after my home land. If everyone looked after their own backyard (help 3rd world countries) it would ease things.
on the original subject there is a working fusion reactor in britain and recently (today I think) it was decided that one twice it's size be built in france...... cool....
There has been a torus fusion reactor at Culham in Oxfordshire for some years now, soon to be decomissioned with ITER taking over. It has never reached break even and has only sustained fusion for a few seconds at a time (however still a record) this is due to eddie currents in the plasma radiating away energy.
it is absolutly imposible to answer that questian, we dont know how many incarnations the universe has experienced and in what form those incarnations took, and who knows, maybe hydrogen is the result of some fusion of material we know nothing about