The disc presents a widescreen 1.78:1 transfer that is anamorphically enhanced for widescreen TV's. The program utilises various different film stocks in its make up and this makes for a very variable picture. For example the Life on Earth sections are in rather poor quality showing plenty of print damage and somewhat soft, the digital filming in the Antarctic is slightly contrast boosted to give over white whites, the news footage has a very soft edge against the clear and bright studio recorded material. But taken as a whole the image is actually pretty good; it is unlikely that there has been any clean up of the source material, so what you see is what you get; a reasonably clear and sharply detailed image. Colours vary between bold and strong to weaker and washed there is also some red bleed in some of the older footage. Contrast and brightness are set to give a reasonable black, but don't expect much in the way of frame depth or shadow detail, it's just not there. However it should be remarked that none of this really matters to the overall sense of watching, there is no distraction from the picture and everything is presented as matter of fact. As such although technically it is just average, cinematically it does not matter.
Just an English Dolby Digital 2.0 Stereo track to accompany the visuals that is purely functional at getting its information across. The score shows some reasonable separation and the dialogue is clear and well defined. Not much bass, but then it is not really needed. If you can process the stereo track through your amp then a pseudo-surround track makes reasonable use of the stage, lowering the bass and opening up the rears. But really this track is about detailing the dialogue to you without any thrills or spills and on that level it works very well.
The Truth About Climate Change is a very goon introduction to this most volatile of subjects and whilst it forwards its own conclusions based on the ideas it puts forward there is a reasoned argument that carries considerable weight with David Attenborough's endorsement. I think it could have gone a little further into the natural occurrences and how the Earth has coped with far more severe changes than this program predicts, but I guess this is aimed at the human population and trying to get them to change their ways.
As a DVD the package is completely barebones and presented as a documentary, exempt from classification and thus does not need any of the bells and whistles to make a sale; it should be compulsory viewing.
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