This documentary was so moving that it's the only TV show I've ever bothered to write a Google Review for.
Pretty visuals but they essentially reused 4 minutes of animation multiple times in 40-50 minute episodes. Not really informative at all because their explanations are either too light, too vague, or just plain wrong. If you want a good documentary with similar subject matter highly encourage you watch "Alien Planet". There's also the free, YouTube series "Life Beyond" by melodysheep which is more comprehensive and visually interesting than this garbage.
Very disappointing show.