World Environment Day is observed to raise and promote the idea of protection and conservation of nature. World Environment Day, also known as Eco Day, is observed in June. The day is observed to make people aware of the problems faced by the environment such as different kinds of pollution, illegal wildlife trade, increased usage of plastic, sustainable consumption, and sea-level increase. The World Environment Day will be observed on June 5. Theme of World Environment Day 2022 is 'Only One Earth'. Watch the video to know more.