A brother and sister create their own miniature version of the ocean in a bucket at the beach. It's complete with wildlife, shells, oil, and even a tin can - a small world that reflects the larger one outside, which is plagued by pollution from plastic in the ocean, deforestation, and the burning of fossil fuels. Through stunning watercolors, the multi award-winning Michael Foreman expresses his worry about the environment's pollution. After 30 years, One World remains increasingly topical.