This year's Earth Hour theme is "Reduce, Rehink, Change the Way We Live"with a focus on eliminating unnecessary single-use plastics. We are calling on Hong Kong to become a Plastice Smart City by being 100% plastic pollution free by 2030. We urge the governmemnt to produce a city plan for dealing with the problem of plastics, leveraging global smart cities best practisces, by World Cities Day in October.