First of all, race has absolutely, categorically no impact on intelligence. It is a construct of Western civilization used to ascribe inherent traits for, primarily, economic exploitation and the perpetuation of various hegemonies. Second, Africa has had myriad 'civilizations' that thrived and fell well before the expansion of Europeans into the continent with the advent of quinine. By 1400 there were over 20 cities on the African continent with populations over 20,000 people whereas there were 4 in Europe. While this, unfortunately, operates on the erroneous assumption that size and complexity of infrastructure indicates 'civilization,' a term usually used to disparage native peoples to continue their subjugation, if this is the quality you're looking for, ancient Africa has it in spades. I would point you to the Malian Empire, the Kingdom of Zimbabwe or the Kingdom of Kush as a few examples of complex empire across the African continent. As to the foolish sentiment as to the lack of black Nobel laureates, that is entirely predicated on the fact that ideologies of racism have flourished by reducing educational, and thus economic, opportunities to blacks. As such, public schools in largely black areas, on this continent and Africa, have been severely lacking since their inception and without strong, institutionalized education it is a virtual impossibility that you will be able to submit work that meets the standards of the Nobel committee. In addition, as the Nobel Prize was founded in 1901, 53 years before Brown vs. Board of Education and the beginning of the end of Jim Crow segregation in the US, blacks would simply have been refused consideration by the prize's committee. Race is a social construct that inaccurately ascribes inherent traits based on skin color to perpetuate power dynamics. Nothing more.
My Games of 2011:
The Legend of Zelda: Skyward Sword
Elder Scrolls V: Skyrim
Super Mario 3D Land
Uncharted 3: Drake's Deception