Argument for Intelligent Design #340,054,234: “…the arteries that supply blood to the scrotum are positioned adjacent to the veins to take blood away from the scrotum and function as an additional cooling/heating exchange mechanism. Thus the average scrotal temperatures in humans are typically 2.5 to 3 degrees Celsius lower than body temperature (37 degrees Celsius), [which makes spermatogenesis possible].”  -Bering in Mind blog