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Bridge Disasters

​There have been several fatal bridge disasters over the course of Canada’s history, some during construction, others after the bridge was in use for some time.

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CS2F Grumman (de Havilland) Tracker

The Tracker was a twin-engine fixed-wing aircraft acquired by the Royal Canadian Navy (RCN) to be flown off aircraft carriers for antisubmarine warfare (ASW) as a replacement for the Grumman Avenger. Originally developed for the United States Navy (USN), a Canadian version was manufactured under licence by de Havilland Canada as the CS2F. After unification the plane was redesignated as the CP-121; the Trackers became shore-based aircraft after the aircraft carrier HMCS Bonaventure was decommissioned. The Trackers became fully operational in 1959 and were withdrawn from service in 1989.

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Royal Victoria Hospital

Royal Victoria Hospital, Montréal, is a teaching hospital affiliated with McGill University. Its original building on the southern slopes of Mount Royal is the premier Canadian illustration of pavilion-plan hospital architecture.

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Ontario Hydro Meltdown

This article was originally published in Maclean’s magazine on August 25, 1997. Partner content is not updated.

Carl Andognini gives his diamond pinky ring a fiddle and offers a thin smile. A very thin smile. He has just come from yet another meeting with a crowd of ONTARIO HYDRO staffers in the mega-corporation’s mirrored headquarters in downtown Toronto.

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Tuberculosis

Tuberculosis (TB) has been known and dreaded since Hippocratic times (460-377 BCE). It was once known as "consumption" and claimed the lives of such famous people as the Brontë sisters, Robert Louis Stevenson and Vivian Leigh.

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Wildlife Preserve

A wildlife preserve is an area of land or water set aside from at least some forms of development or recreational use, particularly from industrial use, hunting and motorized recreation, to protect wildlife and their habitats.

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Heart Disease

In industrial countries more people die from diseases of the heart and blood vessels than from any other single cause.

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Applied Anthropology

Applied anthropologists use their knowledge of peoples and cultures for practical purposes. They do this framed by anthropological concepts and a methodology - ethnographic fieldwork - that portrays people in their actual circumstances.

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Ozone Depletion

Ozone depletion is a chemical thinning of the OZONE LAYER in the stratosphere or upper atmosphere. Scientists determined in the 1970s that it is caused by ozone depleting substances (ODSs), particularly by the use of chlorofluorocarbons (CFCs).

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Gerontology

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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Indigenous Peoples' Medicine in Canada

Since time immemorial Indigenous peoples in Canada have been using plants and other natural materials as medicine. Plant medicines are used more frequently than those derived from animals. In all, Indigenous peoples have identified over 400 different species of plants (as well as lichens, fungi and algae) with medicinal applications. Medicine traditions — the plants used, the ailments treated, protocols for harvesting and application, and modes of preparation — are similar for Indigenous peoples across the country. In many Indigenous communities, there are recognized specialists trained in traditional medicine, and their practice often reflects spiritual aspects of healing as well as physical outcomes. In many cases, the therapeutic properties of Indigenous medicines are attributable to particular compounds and their effects on the body, but in other instances, their application is little understood by western medical practitioners. Within Indigenous communities, specific methods of harvesting and preparation of medicines are considered intellectual property of particular individuals or families.

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Conservation

Conservation can be defined as the planned and efficient use of natural RESOURCES for industrial and nonconsumptive purposes (eg, recreation, research) so as to ensure their permanence, productivity and diversity.

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Fossil Animals

The first animals were microscopic in size and left no known fossil remains. The oldest animal fossils occur in sediments deposited under shallow equatorial seas over 600 million years ago.

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Geomorphology

Geomorphology is related to GEOLOGY because of the importance of long timescales, tectonic deformation of Earth's crust (seePLATE TECTONICS), and rock and sediment properties; and to physical geography through its association with CLIMATE, BIOGEOGRAPHY, SOIL SCIENCE, and HYDROLOGY.

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Green Driving Machines

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.

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Blood Substitute Tested

According to medical lore, the ancient Incas were the first to attempt blood transfusions. And over the centuries doctors around the world have pumped everything from beer to urine into hemorrhaging patients.