A bit pedantic?, However:- I thought the last programme which wound up explaining the earthly cycle, (volcanic soil, banana, human breath, ocean, earth plates, volcano) over tens of millions of years missed the opportunity to put it into currently knowledge context. I refer to the larger, longer term, where The Earth returns to statdust from whence it came and ready for a greater recycling! In other words, the truely amazing Story of The Earth, should be shown as small potatoes when looking at the true 'big picture'.