An important podcast by Stanford School of Medicine:

Olympic athletes potentially face new sex verification policies following the controversial investigation of South African runner Caster Semenya, who was tested repeatedly to prove she was female. Stanford medical anthropologist Katrina Karkazis, PhD, and Rebecca Jordan-Young, PhD, a sociomedical scientist at Barnard College, challenge the proposed policies as unfair, unscientific and unethical. Length: 24 minutes.