Browse "Nature & Geography"

Displaying 646-660 of 740 results

  • Article

    Sulphur

    In Canada, elemental sulphur is recovered from the processing of sour natural gas with a high hydrogen sulphide (H2S) content, and from the refining of high sulphur-bearing crude and heavy oil.

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  • Article

    Sumac

    Sumac is a shrub of the genus Rhus of the family Anacardiaceae. 

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  • Macleans

    Summer of Environmental Scares

    Having a nice summer? It's hard to imagine how: read a newspaper, watch TV, surf the Web, and you soon get the impression that the world is coming to an end. It's enough to make a person want to weep and hide.This article was originally published in Maclean's Magazine on August 26, 2002

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  • Article

    Sun (Celestial Object)

    Beginnings Geological and astronomical evidence suggests that the reactions were triggered 5 billion years ago when the temperature and density at the centre of a condensing cloud of primordial interstellar gas rose to levels where hydrogen atoms fused into helium atoms.

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  • Article

    Sunflower

    Sunflower (genus Helianthus), common name for annual or perennial herbaceous plants native to the Western Hemisphere and belonging to the family Compositae. 

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  • Article

    Sunken Ships/Shipwrecks

    SABLE ISLAND, a crescent-shaped sandbar 300 km east-southeast (160 nautical miles) of Halifax, is also infamous for its shipwrecks, and is known as "the Graveyard of the Atlantic," as its shifting sands have been the site of over 350 such incidents.

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  • Article

    Supply Management in Canada

    Supply management is a system designed to control the supply — and thereby stabilize the price — of Canadian dairy, chicken, turkey and egg products (see Poultry Farming). It began in 1972 as a response to a series of crises that farmers faced due to decreasing prices for these products.

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  • Macleans

    Surviving 1998's Great Ice Storm

    In a dark high-school hallway in Cowansville, Que., two elderly women tried to play canasta by candlelight one night last week. Since the power went out on Jan.This article was originally published in Maclean's Magazine on January 26, 1998

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Surviving 1998's Great Ice Storm

  • Article

    Sustainable Development

    Sustainable development has been defined by the United Nations (UN) as development that “meets the needs of the present” while ensuring the future sustainability of the planet, its people and its resources. Meeting these needs often requires balancing three key features of sustainable development: environmental protection, economic growth and social inclusion. The goals of sustainable development are interconnected. The most successful sustainable development projects will include environmental, economic and social considerations in their final plan. These considerations must include the free, prior and informed consent of any Indigenous groups impacted by a sustainable development project.

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  • Article

    Sutil and Mexicana

    In 1792, after exploratory voyages by Spaniards Manuel Quimper (1790) and Francisco de Eliza (1791), the extent of Juan de Fuca Strait remained a mystery. Some still believed the strait held the entry to the fabled Northwest Passage.

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  • Article

    Swan

    The swan is a large waterfowl with an elongated neck and narrow patch of naked skin in front of the eye.

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  • Article

    Sweet Apple

    The sweet apple (Malus pumila) is a cultivated species of the rose family and Canada's most important tree fruit crop. The sweet apple likely originated in the Heavenly Mountains (Tian Shan) of western China, and was brought to the Middle East on the Silk Road. Wild apple forests can still be found in central Asia, especially in Kazakhstan. The sweet apple is believed to have arisen from an interspecies hybridization in the distant past. Many wild species of Malus have been recognized, but some are hybrids among about 40 true species (nine of which are native to North America). Cultivated varieties (cultivars) were recognized at least by the 3rd century BCE, and valued types have been propagated clonally by budding and grafting since Roman times in the west, and probably far earlier in China. 

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  • Article

    Sweet Corn

    Sweet corn (Zea mays var. saccharata or rugosa) is an annual vegetable of the grass family.

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  • Article

    Swift

    Swift is a common name for about 100 species of birds in 2 closely related families (Apodidae, Hemiprocnidae).

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  • Article

    Tahltan Bear Dog

    The Tahltan (pronounced tall-tan) bear dog was one of five dog breeds recognized by the Canadian Kennel Club as uniquely Canadian (see also Dogs in Canada). Although the name of the breed suggests it was only kept by the Tahltan Nation of Northwestern British Columbia, the dog was common among other First Nations in the region, too. These included the Tlingit, Tagish, Kaska and Sekani. The Tahltan people referred to it as “our dog,” which gave the breed its name. Indigenous peoples used the Tahltan bear dog in sustenance hunting— primarily for bear— an activity in which it excelled. The breed went extinct in the in the 1970s or 80s.

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