UN Secretary-General U Thant proclaims the first Earth Day during a
ceremony at UN Headquarters in 1971.

The UN General Assembly (UNGA) designated 22 April as International Mother Earth Day through resolution A/RES/63/278, adopted in 2009.

Utilizing materials from the UN Audiovisual Library, this production showcases Attenborough’s award acceptance and hopeful message for the future.
https://media.un.org/avlibrary/en