Hi Yvonne,
Great to see that this story is back.
Kryptonite radiation is a very plausible reason for Clark's infertility, and the dialogue between Lois and Clark and Dr Klein is a very welcome light relief to the other angsty content.
And you left us with quite a large problem. Hopefully, now that CK has thought of it, Dr Klein will come to the rescue again.
Yours Jenni