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Sustainability is the ability of the biosphere, or of a certain resource or practice, to persist in a state of balance over the long term. The concept of sustainability also includes things humans can do to preserve such a balance. Sustainable development, for instance, pairs such actions with growth. It aims to meet the needs of the present while ensuring that future people will be able to meet their needs.
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Tidal energy is a largely untapped, renewable energy source based largely on lunar gravitation. While the potential of tidal hydroelectricity has long been recognized, compared to river dams, tidal power projects are expensive because massive structures must be built in difficult saltwater environments.
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The Trans Mountain Expansion is a project to build about 980 km of new pipe, most of which will run parallel to the existing Trans Mountain oil pipeline. The new line will carry diluted bitumen, or “dilbit,” from Edmonton, Alberta to Burnaby, British Columbia. The expansion will increase the pipeline route’s overall capacity from 300,000 barrels per day to 890,000 barrels per day. The project’s first owner, Kinder Morgan Canada, sold it to the Government of Canada in 2018. The Trans Mountain Expansion has been a focus of environmental and economic debates, as well as political conflicts. The $12.6 billion project is now under construction.
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The following article is a feature from our Vancouver Feature series. Past features are not updated. When BC Electric chairman Dal Grauer decided to move to new headquarters south of Georgia Street, he wanted a building that would symbolize optimism and progress. What he got was a gleaming 21-storey modernist structure that glowed with electric light 24 hours a day.
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Wind energy is energy obtained from moving air. The motion results from the heating and cooling of the Earth; thus, wind energy is an indirect form of solar energy. It is normally turned into useful energy by the action of wind currents on moving surfaces such as the sails of a ship or the blades of a windmill. Wind energy is one of the oldest forms of energy used to supplement human muscle.
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Macleans
This article was originally published in Maclean’s magazine on November 11, 2002. Partner content is not updated.
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