Corona has made a pact to protect 100 islands around the world from plastic pollution. Fernando de Noronha, a tiny Brazilian surf paradise, is one of them. But in such a small place, we decided to go further than simple clean-ups, so we lent our poster boy, Gabriel Medina, to become the face of small businesses in Noronha on a simple condition: they'd had to end their stock of plastic on the same day.