You arrive on the island of Bali in Indonesia. You meet sisters Melati and Isabel Wijsen at a local school. A few years ago the sisters noticed plastic trash all over the beaches and were able to convince Bali’s governor to ban plastic bags. Aside from plastic waste polluting beaches, a lot of carbon dioxide is released when plastic is produced. While you are speaking to the sisters, they ask: “What is something that you want to help to change?”