Gender Controversy Runner Welcomed Home

Caster Semenya, a native of South Africa, won the 800 meter world championships in Berlin and returned home to controversy over her gender.

Her gold medal is being challenged by the Association of Athletics Federations (AAF) officials who, according to USA Today, explained questions had been raised about her muscular physique and stunning improvement in times. If Semenya has lived her life as a female but her sex is male, should the AAF be able to renounce her gold medal? What does this say about sex and gender in present times? (Is she too fast to be female?)