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Article

Salmonella

The OrganismThe organism that causes salmonella is a genus of bacteria of the family Enterobacteriaceae, members of which are commonly found in the intestinal tract of humans and other animals. It is named after D.E. Salmon, the American bacteriologist who described it in 1885.

Article

Sports Medicine

Sports medicine practitioners help serious athletes plan preseason training and testing, provide early treatment for injuries, identify groups that may be susceptible to risk, and record frequencies in patterns of injuries.

Article

Pollution

Pollution can be defined as the release of any material, energy or organism that may cause immediate or long-term harmful effects to the natural ENVIRONMENT. Pollution was viewed initially as the unsightly mess or visible environmental damage resulting from careless disposal of various materials.

Article

Medical Ethics

Medical ethics are concerned with moral questions raised by the practice of medicine and, more generally, by health care.

Article

H1N1 Flu of 2009 in Canada

From April to December 2009, Canada experienced an outbreak of influenza A (H1N1). The virus began in North America and spread to many other countries in a global pandemic. This new type of flu differed from the typical seasonal flu, and its effects were more severe. Worldwide, more than 18,000 people are confirmed to have died of H1N1, including 428 Canadians. Estimates based on statistical models have put global deaths much higher. Totals may have been in the hundreds of thousands. The H1N1 pandemic tested Canada’s improvements to its public health system after the SARS outbreak of 2003. On the whole, it revealed a more efficient, coordinated response.

Click here for definitions of key terms used in this article.

Article

Evolution

Modern understanding of evolution began in 1859 with publication of Charles Darwin's On the Origin of Species by Means of Natural Selection.

Article

Uranium

Uranium oxide was first identified in 1789 by M.H. Klaproth in the MINERAL pitchblende, but its distinctive property of radioactivity was discovered much later (1896) by Henri Becquerel.

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Electric Cars to be Marketed

This article was originally published in Maclean’s magazine on July 29, 1996. Partner content is not updated.

O'Callaghan was one of the first people in Canada to drive the Impact, a compact electric vehicle (known as an EV) that will soon be the subject of a joint research project by General Motors Corp., B.C. Hydro and the British Columbia government.

Article

Mineral Naming

Each mineral species is identified by its own appellation, and names have been assigned since antiquity. While there are only some 3000 valid mineral species, nearly 20 000 names occur in the literature. This is partly because researchers working independently have given different names to the same mineral, and partly because distinct names have been applied to minerals that later proved to be varieties or mixtures of already known species. Today a much better control is exercised by the Commission on New Minerals and New Mineral Names established in 1959 by the International Mineralogical Association.

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Depression

This article was originally published in Maclean’s magazine on December 1, 1997. Partner content is not updated.

The first serious bout was back in 1963, when he was attending Queen's University and, just before final exams, locked himself in his dorm room for two weeks.

Article

Agriculture and Food

Canada's agriculture and food industries have changed greatly in the years since the Second World War. Growth in Canada’s economy, and associated social changes, have altered the way food is produced, processed, handled, sold and consumed.

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Genealogy

A genealogical study begins with the researcher recording everything one knows about one's immediate family. This information can be supplemented by oral tradition from elderly relatives. Family papers such as letters, deeds and diaries can help verify these recollections, as can old photographs.

Article

Linguistic Anthropology

In Canada linguistics exists as a fully autonomous discipline, represented by about 12 independent programs, as well as by linguistic research within departments of English, various other language areas, education, philosophy, psychology, sociology and anthropology.

Article

Time Dissemination

Accurate TIME is disseminated or distributed by telecommunication systems to end users across Canada. Time and frequency references, traceable within stated limits to recognized standards, are available in Canada by ground and satellite based radio, television and telephone.

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Viagra Hits Canada

This article was originally published in Maclean’s magazine on March 22, 1999. Partner content is not updated.

Bill Smith, a 55-year-old heavy-machine operator from Fredericton, knows these are his salad days revisited. As one of 500 Canadian men participating in the clinical trials of the impotency drug Viagra, he has been getting samples for two years. "They're free, so why not use them?" he says.