[edwin hubble]

Willie, the beginning of the 5th paragraph:

"Nuclear FUSION is the other source of energy..."
This is a typo...

He meant to refer to 'fission' here, not fusion, because he is referring to the long half-life of the nuclear waste and the many neutrons released by the reaction. and because he goes on to say:

"On the other hand, a fusion reaction carried through Helium3 releases only one percent of its energy in the form of neutrons..."

[Willie Green]

This is a typo...
He meant to refer to 'fission' here, not fusion,

I think you're right.
It probably should be "fission".
I also think he dismisses fission too quickly in his exotic quest for fusion.