Our planet is amazing, a fact that's hard to comprehend when you look at how us Humans treat it sometimes. Here is a little picture that I noticed on the inter-webs today that illustrates just how massive the core of the Earth is compared to volumes of air and water covering it; makes you realise how relatively "thin" these layers are which is a bit scary really since we seem to be dead-set to pollute the crap out of both.
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