SciDev.Net says although "the origin of scientists is changing" and "scientific research becomes more globalised and less dominated by Europe and North America", "the latest list of the world’s most highly cited researchers features few scientists based in developing countries — and none from Africa outside South Africa — exposing the North–South divide and raising questions on how the impact of science is measured."
"Thomson Reuters has issued its The World’s Most Influential Scientific Minds: 2014 report based on analysis of recent citations of published papers across science."
"But only 86 out of the approximately 3,200 scientists on the list are affiliated with institutions in the developing world. And they are based in only 12 countries, with most in Saudi Arabia, Iran, India and Turkey, whose combined count is 63."
How do you explain this difference between the developing and developed world?
http://www.scidev.net/global/publishing/news/highly-influential-scientists-still-rare-in-the-developing-world.html