Have you heard of the Mpemba effect?

Next in my series of science and Africa I want to talk about an African who has a scientific term named after him - Erasto Mpemba from Tanzania. Still a pupil at school he says he discovered that hot water freezes faster than cold water. This has since then been called the "Mpemba effect". Scientists are still debating wether this is actually happening or not (read more here on why this is an issue) but Erasto Mpemba is one of few Africans who can say they have given name to a scientific term.