I enjoyed the photography, a feast for the eyes. The science on a great many occasions is simply wrong and outdated. The "Green Thought Machine" messaging is in full force. I absolutely hated the narration. I couldn't understand it and needed to watch with subtitles. For me, David Attenborough voice grated on my nerves and he swallowed too many words. Perhaps the British, who are familiar with his work, think he is great, but as a Canadian, unfamiliar with his work, not so much. I tried muting it and watch with only with the subtitles, but I missed the score which I enjoyed. I would give this almost a failing grade.