Lance Lau Hin-yi is an 11-year-old Hong Kong schoolboy who has spent nearly every Friday standing outside the gate of his school before class, raising awareness about climate change. He says he was inspired by “climate girl” Greta Thunberg, the Swedish activist who is internationally known for challenging world leaders to take immediate action against climate change. Lance also organises monthly beach clean-ups to promote the concept of sustainable development. He is also a regular speaker at…