My rule of thumb: if it's a David Attenborough video, it's worth blogging.
BTW, if you've never used the "fullscreen" button on a YouTube video [lower right corner], now would be a good time to try it...
Here's a background on the lyrics:
"What a Wonderful World" is a song written by Bob Thiele (as "George Douglas") and George David Weiss. It was first recorded by Louis Armstrong and released as a single in 1967...Via truthdig.
The song gradually became something of a standard and reached a new level of popularity. In 1978, Armstrong's 1968 recording was featured in the closing scenes of the first series of BBC radio's cult hit, The Hitchhiker's Guide to the Galaxy, and was repeated for BBC's 1981 TV series of the same. In 1988, Armstrong's recording was featured in the film Good Morning, Vietnam and was re-released as a single, hitting #32 on the US Billboard Hot 100 chart in February 1988. The single charted at number one for the fortnight ending June 27, 1988 on the Australian chart