So, this rare Sesame Street promo just got uploaded to YouTube! The video with We Are All Earthlings is from 2002. Muppet Wiki says this: In 2007, a portion of the song was used, as sung by Elmo, in a spot for PBS in preparation for Earth Day. An extended version was later used as a general PSA about talking to kids, including vocals with Big Bird (in the original version of the song, Big Bird can be seen in his nest in a clip). I'm all confused here. At the end of the promo, it says something about talking to kids which makes me think this is the extended version. There are no vocals from Big Bird, but there is dialogue from him at the end. Are there really two different versions of the spot, or just one?