Olympus Mons the height of Mauna Kea as measured from its base on the ocean floor). The total elevation change from the plains of Amazonis Planitia, over to the northwest, to the summit approaches . The summit of the mountain has six nested calderas (collapsed craters) forming an irregular depression × across and up to deep. The volcano's outer edge consists of an escarpment, or cliff, up to tall (although obscured by lava flows in places), a feature unique among the shield volcanoes of Mars. Olympus Mons covers an area of about , which is approximately the size of Italy, and it
Our Plundered Planet Our Plundered Planet Our Plundered Planet is a book published in 1948 that was written by Fairfield Osborn about environmental destruction by humankind. With a focus on soil, the book is a critique of humankind's poor stewardship of Earth. It typifies the earliest apocalyptic environmental literature, in which human beings are seen as destroyers of the natural world. "Our Plundered Planet", along with William Vogt’s "Road to Survival", also published in 1948, launched a Malthusian revival in the post War era, and would inspire Paul R. Ehrlich, author of "The Population Bomb" among many others. In writing this book, Osborn