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Gerontology is the scientific study of AGING and its consequences including psychological, biological, and social changes confronting individuals, the social and economic issues created by growing numbers of older people in a population, and the opportunities older age brings with it.
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Article
Glaciation is the formation, movement and recession of glaciers. Glaciation was much more extensive in the past, when much of the world was covered in large, continental ice sheets. Currently, glaciers cover about 10 per cent of the world's land area (14.9 million km2).
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The first known Canadian glass factory or glasshouse, the Mallorytown Glass Works in Upper Canada, began operation in 1839 and closed in 1840. Glassmaking involved a large investment in raw materials, equipment and salaries.
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Macleans
This article was originally published in Maclean’s magazine on February 21, 2000. Partner content is not updated. Across the Arctic, the ominous signs are everywhere. With average temperatures in some parts of the Canadian North rising at the rate of about 1° C each decade, glaciers are in retreat. Scientists report a dramatic thinning of the Polar ice cap.
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Article
Grain elevators, which have been variously referred to as prairie icons, prairie cathedrals or prairie sentinels, are a visual symbol of western Canada. Numbering as many as 5,758 in 1933, elevators have dominated the prairie landscape for more than a century with every hamlet, village and town boasting its row of them, a declaration of a community's economic viability and a region's agricultural strength.
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Grain growers' associations are a group of farm organizations formed on the Prairies in the early 20th century. They developed in the wake of the Manitoba Grain Act (July 1900), which regulated railways and grain elevators in the interests of grain growers.
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Grain Growers' Guide, journal published 1908-28 for Prairie grain growers' associations. In 1928 it became the Country Guide, which is still published by the United Grain Growers in Winnipeg. Editors included E.A. PARTRIDGE, Roderick McKenzie and (1911-35) George Chipman.
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There are approximately 120 000 grain-producing farms in Canada. Yearly production varies substantially, depending on climatic conditions. Grain production has doubled since the 1950s, with wheat making up a large percentage of production. In 1997-98, total Canadian wheat exports were 15.
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Gravity, the fundamental physical property of attraction between all bodies, is here considered mainly as it relates to the study of the Earth.
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Macleans
From the outside there was little to distinguish the sleek Toyota Prius from any other car on the streets of Timmins, Ont. But when the driver turned the key, it was clear this was no ordinary sedan. The only sound as the Prius pulled away was the gentle hum of an electric motor.This article was originally published in Maclean's Magazine on July 20, 1998
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Green Fishery, the COD fishery carried out in Newfoundland and Labrador in which the product is preserved in salt on board the fishing ship to be dried later.
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Article
Today's greenhouse industry uses the most modern technologies, which allow it to reduce their negative effects on the environment, to considerably improve the energetic efficiency of crops (used energy by unit production) and thus to remain competitive in national and international markets.
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Macleans
Heart disease, Crohn’s, even autism may be affected by the bacteria in our guts—and the fix may live there, too.This article was originally published in Maclean's Magazine on July 15, 2013
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Article
The principal use for gypsum is wallboard. Crude gypsum is pulverized and heated to form stucco, which is mixed with water and aggregate (sand, vermiculite or expanded perlite) and applied over wood, metal or gypsum lath to form interior wall finishes.
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