Fewer sperm in the summer--it's not the heat, it's...
Snyder
P J
PJ
D001723:Birth Rate; D006358:Hot Temperature; D006801:Humans; D007248:Infertility, Male / Q000209:etiology; D008027:Light; D008297:Male; D012621:Seasons; D013076:Sperm Count; D013091:Spermatogenesis / Q000502:physiology*