Answer: Climate Action
Notes: Every year, April 22 has been celebrated as the Earth Day. The United Nations designates the day as World Mother Earth Day. This year, April 22 is the 50th anniversary of the World Earth Day. The theme of this year’s observance is ‘Climate Action’. It has been celebrated from the year 1970, when about 20 million Americans participated in a historic environmental protest. This year, several artists participate in the protest under the name #EarthDay2020Halt.
