| The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of Our World | University of British Columbia, Okanagan |
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| Times Books, Henry Holt and Company | Clarke's Table of Crust Oxides Compound Formula Composition SiO 2 59 |
Note that the ice shields of Antarctica and Greenland are counted as land, even though much of the rock which supports them lies below sea level.
22| Naval Observatory and Bureau International des Poids et Mesures | 3 The first photograph ever taken of an "Earthrise," on |
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| Due to natural fluctuations, ambiguities surrounding , and mapping conventions for , exact values for land and ocean coverage are not meaningful |