For avoidance of doubt, I think all people are fundamentally the same and the only thing different is the colour of their skin.
However, I've noticed that:
- All the recent 100m Olympic and World champions have had Afro-Caribbean ancestry
- A lot of distance races have been won by Kenyans in recent years.
Is there reputable scientific evidence that indicates a physiological difference between the different races which impacts on their sporting ability, or is the difference down to cultural factors?