To add
Just to add a couple more facts picked up from the net today.
Apparently the US Government have invested close to $1.2 Billion in the Livermore National Laboratory for research. So far the facility has produced a laser beam 60 times more powerful than anything else in the world and can generate temperatures up to 100,000,000 degrees. I suppose that is Fahrenheit but at those numbers, who really cares! DRK