| Times Books, Henry Holt and Company | |
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| Naval Observatory and Bureau International des Poids et Mesures | Based on data from the and datasets, extreme values for coverage of lakes and streams are 0 |
| 3 The first photograph ever taken of an "Earthrise," on | 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 |
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| University of British Columbia, Okanagan | The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of Our World |