Solar System lie within a nearly flat disc called the ecliptic. The Solar System also contains smaller objects. The asteroid belt, which lies between the orbits of Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, which are populations of trans-Neptunian objects composed mostly of ices, and beyond them a newly discovered population of sednoids. Within these populations are several dozen to possibly tens of thousands of objects large enough that they have been rounded by their own gravity. Such objects are categorized as dwarf planets.
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