Boundaries between the continents of Earth Boundaries between the continents of Earth The boundaries between the continents of Earth are generally a matter of geographical convention. Several slightly different conventions are in use. The number of continents is most commonly considered seven but may range as low as four when the Americas and Afro-Eurasia are each considered a single continent. According to the definition of a continent in the strict sense, an island cannot be part of any continent, but by convention and in practice most major islands are associated with a continent. There are three overland boundaries subject to definition: While the isthmus between Asia
The Continent Makers The Continent Makers The Continent Makers is a science fiction novella by American writers L. Sprague de Camp, part of his "Viagens Interplanetarias" series. It was first published in the magazine "Thrilling Wonder Stories" in the issue for April, 1951. It first appeared in book form in the collection "The Continent Makers and Other Tales of the Viagens", published in hardcover by Twayne Publishers in 1953, and in paperback by Signet Books in 1971. It has also been translated into Portuguese, Dutch, and Italian. Geophysicist Gordon Graham is a participant in the Gamanovia Project, whose mission is to increase the