Michio Kaku is a popularizer and not really a deep thinker, in my opinion.
Well hell Son, he's our kinda guy!
I base my research on
1) Cat Women Of The Moon (1953)
2) Abbott and Costello Go To Mars (1953)
3) Fire Maidens from Outer Space (1956)
4) Queen Of Outer Space (1958)
5) Missile to the Moon (1958)
6) Planet of the Amazon Women (1979)
and...
7) "Amazon Women in the Mood" (2001)
I' am willing to donate my seed to breed.