How Earth Got Its Oxygen [Science]

If you're currently living on our pale blue dot, you should thank it for becoming inhabitable for us human folk. Specifically, you should look down and thank its mantle because scientists are saying that Earth's cooler mantle allowed it to develop oxygen. You know, that thing we breathe to live. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/7C-fpDOA5QI/how-earth-got-its-oxygen

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