Sharp-eyed and sharper-minded comic sleuth Art Lortie tipped me to this page from the Oct. 1930 issue of POPULAR MECHANICS. It seems that in the science of the era, cosmic rays were considered to have life-evolving properties.
POPULAR MECHANICS vol. 2 #2 (Oct. 1930)
This info has been added to the previous post.
A tip of the Comics Detective's deerstalker cap to Art Lortie!