About Changemaker Joost When I was four years old I realized there was garbage on the street. And that it didn't belong there. So I said to my mom and dad: "Come, get your bike and a plastic bag. We're just going to pick up the trash!" Since then I've made myself visible on social media, I gave a TEDX Youth Talk when I was 11. I've been in the NRC, I've been on the cover of the SamSam and I've appeared in the Klokhuis. I believe that every little bit helps and that you can make a difference yourself. I try to make people around me aware and inspire them to contribute to a cleaner world.