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A quantity or amount of something, especially as dealt with in one commercial transaction. To divide something into parcels is to divide it into discrete sections.
pollution, development and over harvesting have greatly diminished America's natural oyster habitat. Aquaculture and adaptable farmers have changed the game.
This article outlines the causes and effects of the California Gold Rush
Biosphere 2 was one of the most lauded experiments of the 1990s, then one of the most ridiculed. Now it is back, offering a unique way to put theories about climate and environment to the test.
Historian Matthew Pinsker explains the Homestead Act in the context of the Civil War, when it was passed.