I think this is one of the best geographical documentaries I have ever seen. Spectacularly filmed and awesome scenery!
Iain Stewart is a great presenter, always on the go, touching, tasting, feeling the elements of the Earth. It's a lesson in Geography but certainly not boring.
I don't know why but love the scene with the bubbling oil - it is like boiling treacle and really strange. In fact there are quite a few strange and wonderful things in the series. Like the Arctic Underground Svalbard Seed Vault where they are gathering samples of all the earth's known seeds and grains, like human squirrels. And the Great Pacific Garbage Patch where a 100 million tons of plastic bottles and waste drift across the ocean and cover an area twice the size of the USA. And the Naica Cave which is 50 degrees C , 100% humidity and filled with gigantic, weird but amazing rod-shaped crystals. And Iain Stewart isn't scared to get stuck in - when he visits places like the Naica Cave that are too hostile for humans, he just gets kitted up in protective clothing and breathing gear and wades on in!
All in all the Series is great. Not only is it really interesting and exciting but also it is a beautifully filmed and edited documentary. Great stuff!