What would count as "scientific racial differences"?

Dear All,



I've gathered that the world of science considers human races to be an unscientific division of man. My question is, what differences would the races have to have, to be considered scientifically real? Mutual infertility perhaps? Horns versus no horns? I'm not sure; perhaps you know.



Cpl Ferro

via JREF Forum http://forums.randi.org/showthread.php?t=263787&goto=newpost