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
Wings of a Continent Wings of a Continent Wings of a Continent is a 1941 Canadian short documentary film, part of the "Canada Carries On" series of short films by the National Film Board of Canada, produced for the Office of Public Information. The film was directed by Raymond Spottisswoode—father of filmmaker Roger Spottiswoode—and produced by Stuart Legg and narrated by Lorne Greene. Commercial air transportation in Canada began with bush pilots pioneering air routes in the north and Arctic. A new industry was born and within a few years, the air carriers serving the Canadian north became the largest carriers of airborne cargo