Browse "Science & Technology"

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Macleans

Parkinson's Disease a Mystery

A doctor's diagnosis can land like a punch in the solar plexus: you have Parkinson's disease. Chronic, progressive and incurable. In the life-altering reverberations that follow come the questions.This article was originally published in Maclean's Magazine on April 29, 2002

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Patent

A patent applies to an invention that is determined to be new, useful and inventive. A patent provides an inventor with the exclusive right to make, use or sell their invention for a certain number of years. When a patent expires, the invention becomes public property. (See also Intellectual Property; Inventors and Innovations.)

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Peavey

The peavey is a lever for handling logs It was designed in 1858 and named after its inventor Joseph Peavey, who was a Maine blacksmith. The peavey, which is a refinement of the earlier cant hook, greatly facilitated the down

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Pediatrics

Pediatrics is that branch of MEDICINE concerned with the child, its development, care and diseases.

Macleans

PEI's Engineering Marvel

This article was originally published in Maclean’s magazine on June 2, 1997. Partner content is not updated. Islanders had never seen anything quite like it. On July 13, 1995, the world's largest floating crane, known as the Svanen, arrived off the coast of Prince Edward Island for work on the $1-billion bridge that has finally linked the province to mainland Canada.

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Petrochemical Industry

The petrochemical industry, which produces chemicals using OIL AND NATURAL GAS as major raw materials, occupies an important position in Canada's MANUFACTURING and consuming sectors. Oil and natural gas are composed primarily of hydrocarbons. Most petrochemicals contain hydrogen or carbon or both.

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Petroleum

Since its first commercial exploitation in the 1850s, petroleum has become the major energy source of Canada and the industrial world.

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Pharmacy

Pharmacy is the act or practice of preparing, preserving, compounding and dispensing drugs. Louis HÉBERT, one of the first settlers of New France, was a pharmacist from Paris.

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Physical Anthropology

Human biological history is most directly told by the fossil record. Although early hominid remains (fossils in the human line) are not found in the Western Hemisphere, Canadians have contributed significantly to paleontology.

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