This year's Earth Day -- the 50th anniversary of the birth of the modern environmental movement -- will be a quiet one.
원문출처 : https://www.cnn.com/2020/04/22/health/earth-day-ideas-coronavirus-wellness/index.html
원문출처 : https://www.cnn.com/2020/04/22/health/earth-day-ideas-coronavirus-wellness/index.html