 And on today's program, we're going to meet each of the four finalists before they do their last pitch in front of the judges, and then find out who takes away the prize, which is worth more than 60,000 US dollars. Now we've got some really smart ideas that show there is a lot of exciting innovation happening in Africa. The solutions we're going to hear, for example, today are about pest detection, access to healthcare, plastic recycling, and waste disposal.