 Welcome to People Fixing the World from the BBC World Service with me, Myra Anubi. We're the program that travels the world for solutions. And you might have noticed by now that I'm not in studio. That's because this is a special program. I'm coming to you from my home country, Kenya. I'm in the capital city, Nairobi, for the final of the Africa Prize, which rewards the finest young innovators from across the continent who are trying to solve some of the world's most pressing problems.