If Ashley was born in Darfur, we wouldn't be having this debate. She wouldn't have survived early infancy. I'm not saying I agree with what her parents did, but just wanted to put it into perspective.

Razib, is this the study you were looking for? 
http://www.citeulike.org/user/naturecure/article/655726 
 
"Heritability was estimated to be approximately 66% for 2d:4d (95% confidence interval 0.5-0.78). These results suggest a substantial genetic contribution to the determination of this hormonally related skeletal ratio in women, which could be more influential than the effects of common prenatal environmental factors. However the current study design does not preclude the possibility of confounding between heritability estimates and unobserved prenatal effects."

http://www.amazon.com/Digit-Ratio-Fertility-Evolution-Trivers/dp/081353030X/ref=si3_rdr_bb_product/104-3656843-9021512?ie=UTF8 
 
Digit ratio is correlated to how much testosterone the fetus is exposed to in utero.

John, Razib, and others, Just curious -- Assuming you have or plan to have children, how will you raise them? Atheist, creationist, other?

No, a google search.

Hi - I've been trolling this site for the last few days. This discussion reminded me of a Doonesbury cartoon from a few months back as well as study by Philip Longman. Enjoy! 
 
http://www.doonesbury.com/strip/dailydose/index.html?uc_full_date=20060423 
http://www.newamerica.net/index.cfm?pg=article&DocID=2945