Culture of South Africa originated in South Africa. The first human-to-human heart transplant was performed by cardiac surgeon Christiaan Barnard at Groote Schuur Hospital in December 1967. Max Theiler developed a vaccine against Yellow Fever, Allan McLeod Cormack pioneered x-ray Computed tomography, and Aaron Klug developed crystallographic electron microscopy techniques. These advancements were all (with the exception of that of Barnard) recognised with Nobel Prizes. Sydney Brenner won most recently, in 2002, for his pioneering work in molecular biology. Mark Shuttleworth founded an early Internet security company Thawte, that was subsequently bought out by world-leader VeriSign. South Africa has cultivated a burgeoning astronomy community.
Nobel Prize effect no such effect on either citation impact or related chain reactions of citations. In addition to the life-changing effects of winning a Nobel prize, an alternative meaning exists for the Nobel effect in the context of the Nobel Peace Prize. In this context, legal scholars have argued whether Nobel Peace Prize laureates have, as a result of winning the Prize, influenced the shaping of new norms in international law and international relations, and suggesting that the Peace Prize can be a significant factor in encouraging peacemaking among individuals worldwide. An analysis of birth data on 19th century science Nobel Prize