Browse "Science & Technology"

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Article

Diabetes

Diabetes mellitus, commonly referred to as diabetes, is a disease in which the body either produces insufficient amounts of insulin or cannot use insulin properly.
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Article

Diamond

Gem-quality diamonds crystallize as octahedrons (8 faces), trisoctahedrons (24 faces), hexoctahedrons (48 faces) or a combination of these. Diamond owes its supreme standing among all the gemstones to 4 specific attributes.
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Article

Dietetics

Dietetics (from the Greek diaita, meaning "mode of life") has been implicated in the cause, cure and prevention of disease from earliest recorded history.
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Article

Canada and the Digital Economy

The digital economy is the economic activity conducted through digital technologies such as the Internet. It is also called the Internet economy, the new economy or the web economy. Many scholars see the digital economy as the fourth industrial revolution. As of 2013, it consumed approximately 10 per cent of the world’s electricity. Many of the world’s biggest companies operate in the digital economy. A growing number of Canadians depend on it for their livelihood. In 2017, nearly 5 per cent of all jobs in Canada were in the digital economy. The gross domestic product (GDP) connected to it represented 5.5 per cent of Canada’s total economy — a bigger percentage than mining or oil and gas extraction. However, the often-hidden infrastructure of the digital economy brings new threats to the environment. The rise of cryptocurrencies could also dramatically change how people buy and sell things.
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Article

Direct-to-home Satellite Broadcasting

Direct-to-home (DTH) satellite broadcasting is a form of SATELLITE COMMUNICATION which offers consumers significantly more entertainment options than those offered by local cable companies.
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Article

Disability

Disability is defined by the World Health Organization (WHO) as the temporary, prolonged or permanent reduction or absence of the ability to perform certain commonplace activities or roles, sometimes referred to as activities of daily living.
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Article

Disease

In recent years genetic diseases have become better understood since they are dependent on a fault in the normal gene sequence that controls body activities.
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Macleans

Distinctive Brains of Psychopaths

This article was originally published in Maclean’s magazine on January 22, 1996. Partner content is not updated. In British author Philip Kerr's futuristic novel, A Philosophical Investigation, scientists can determine whether a man is prone to violent criminal behavior by administering a brain scan to detect an abnormality.
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Macleans

Doctor Averts Euthanasia Trial

This article was originally published in Maclean’s magazine on March 9, 1998. Partner content is not updated. For someone facing the prospect of being sent to trial on a charge of murder, Nancy Morrison appeared remarkably calm. As she stood to one side of a packed courtroom in Halifax last Friday morning, the 42-year-old respirologist spoke amiably with one of her defence lawyers.
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Macleans

Doctor Charged in Patient's Death

This article was originally published in Maclean’s magazine on May 19, 1997. Partner content is not updated. Late last September, Paul Millss family was deeply distressed over his battle with throat cancer in a Moncton, N.B., hospital. In the hope that more advanced treatment might help, they transferred him to the Queen Elizabeth II Health Sciences Centre in Halifax.
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Article

Dorion School Bus–Train Crash

A collision between a school bus and a freight train on 7 October 1966 killed 19 students from Cité-des-Jeunes secondary school near Vaudreuil, Quebec, and their bus driver. The crash is among the worst road disasters in Canadian history.
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Article

Dorothea Palmer

Dorothea Ferguson (née Palmer), birth control advocate, social worker (born 1908 in England; died 5 November 1992 in Ottawa, ON). Dorothea Palmer was arrested in 1936 for advertising birth control to women in a working-class neighbourhood in Ottawa. She was cleared of charges after a lengthy trial proved her work had been for the public good. Her acquittal was a major victory for the birth control movement in Canada.
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Macleans

Drug Therapy for Strokes

This article was originally published in Maclean's Magazine on March 20, 2000. Partner content is not updated.One Saturday morning last November, Peggy Code collapsed outside a suburban Calgary mall. Helped to a nearby bench, the 64-year-old nurse realized she was drooling and that the entire left side of her body was insensate.
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Macleans

Drug Trials Controversy

This article was originally published in Maclean’s magazine on December 21, 1998. Partner content is not updated.By enduring frequent blood transfusions and painful injections that allow a drug to be pumped into her body at night, 14-year-old Julie Vizza has survived a rare blood disease called thalassemia that leaves her body dangerously short of oxygen.This article was originally published in Maclean's Magazine on December 21, 1998
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Article

Dugout Canoe

A dugout canoe was a common type of canoe, traditionally used by Indigenous peoples and early settlers wherever the size of tree growth made construction possible. The dugout canoe was most popular along the West Coast, where waters teeming with sea life—whales, seals, sea lions, salmon, halibut, herring, eulachon and shellfish—sustained a complex maritime culture. (See also Northwest Coast Indigenous Peoples in Canada.)
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