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A woman works in a dump ground before the Earth Day in Kolkata, India, on April 21, 2018. Earth Day is commemorated annually on April 22. This year's celebration theme is "End Plastic Pollution". (Xinhua/Tumpa Mondal)
A woman works in a dump ground before the Earth Day in Kolkata, India, on April 21, 2018. Earth Day is commemorated annually on April 22. This year's celebration theme is "End Plastic Pollution". (Xinhua/Tumpa Mondal)