Browse "Science & Technology"

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Macleans

Chasing a killer

ALS is as common as Multiple Sclerosis. It seems to be striking people who are younger and younger.This article was originally published in Maclean's Magazine on March 17, 2013
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Chemical and Chemical Products Industries

Chemical manufacturing entails the conversion of one material to another by a chemical reaction on a commercial scale. The starting material (feedstock) can be a natural substance or a relatively pure chemical used as an "intermediate" for subsequent upgrading.
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Chemical Engineering

Chemical engineering is the technology of scaling up to commercial size chemical reactions which have been demonstrated in the laboratory.
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Chemistry

Chemistry, the science concerned primarily with the structure and properties of matter and with the transformation of one form of matter into another. Now one of the most theoretically and methodologically sophisticated sciences, chemistry had its beginnings in medieval alchemy. Because chemistry studies matter at a basic level, it is concerned with the physical sciences (e.g., physics), the life sciences (e.g., biochemistry, contemporary medicine) and the earth sciences (e.g., geology, geochemistry). Not only do chemical studies aim to understand natural processes, they also underpin production of many goods essential to daily living, ranging from food and drugs, through substances used in the visual arts, to heat and electricity. Chemical engineers specialize in the transfer of knowledge from the academic sphere to that of industry.
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Chemistry Subdisciplines

Early chemistry was principally analytical in nature; only as the body of experimental data increased did the present-day specialities evolve. The principal chemical subdisciplines are analytical, inorganic, organic and physical chemistry.
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Chiropractic

Chiropractic is the manipulation of the spinal column as a means of curing disease. The word comes from the Greek chiro ("hands") and practic ("to practice"). The theory of chiropractic originated with D.D. Palmer, who was born in Port Perry (Ontario) in 1845.
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Cholera in Canada

Cholera first reached Canada in 1832, brought by immigrants from Britain. Epidemics occurred in 1832, 1834, 1849, 1851, 1852 and 1854. There were cases in Halifax in 1881. The epidemics killed at least 20 000 people in Canada.
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Macleans

Chronic Fatigue Syndrome

This article was originally published in Maclean’s magazine on April 15, 2002. Partner content is not updated. Ashley Roll's mother is reluctant to have her come to the phone. She's worried that answering questions will take too much out of the 19-year-old, but Ashley says she's feeling up to it. Because of chronic fatigue syndrome, Roll is almost a prisoner of her home in Burnaby, B.C.
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Macleans

Chronic Fatigue Syndrome Recognized

This article was originally published in Maclean’s magazine on May 4, 1998. Partner content is not updated. Sharon Baillie once loved to read. Not any more. By the time she gets to page 3 of a book, she has generally forgotten what she read on page 1. She used to enjoy 25-km hikes on weekends. Now, she can barely manage a 20-minute walk with her golden retrievers, Buddy and Dusty.
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Churchill Falls

The project was undertaken by a subsidiary of British Newfoundland Corp Ltd (Brinco), and was at the time the largest civil engineering project ever undertaken in North America. Eighty strategically placed dikes pooled the vast waters of the Labrador Plateau in the Smallwood Reservoir.
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Macleans

Cigarette Packaging

This article was originally published in Maclean’s magazine on January 31, 2000. Partner content is not updated. Perhaps, but if Rock gets his way cigarette packaging is about to go from colourful and cool to downright disturbing.
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Civil Engineering

Before the multiplication of engineering disciplines in the late 19th and early 20th centuries, engineers were either military or civilian. Civilian engineers built nonmilitary structures; those in the military concentrated on FORTIFICATIONS.
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Climate Change

Climate change occurs when long-term weather patterns begin to shift. These periods of change have occurred throughout the Earth’s history over extended periods of time. However, since the Industrial Revolution the world has been warming at an unprecedented rate. Because of this, the current period of climate change is often referred to as “global warming.” Human activities that release heat-trapping greenhouse gases, such as the burning of fossil fuels, are largely responsible for this increased rate of change. The implications of this global increase in temperature are potentially disastrous and include extreme weather events, rising sea levels and loss of habitat for plants, animals and humans. In Canada, efforts to mitigate climate change include phasing-out coal-fired power plants in Ontario and instituting a carbon tax in British Columbia. (This is the full-length entry about climate change. For a plain-language summary, please see Climate Change (Plain-Language Summary).)
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Macleans

Climate Clues from Vancouver Island

To the uninitiated, it looks no more exciting than a long, thin log of grey plasticene. But to scientists like Jeffrey Fox, a Texas geologist who oversaw its extraction last week from the bottom of a deep bay 16 km north of Victoria, the 9.This article was originally published in Maclean's Magazine on September 2, 1996
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Climate Information

Climate information is used by a variety of people. Building designers must be certain that their structures will withstand the strongest winds and be habitable during temperature extremes. Airlines, when possible, plan their routes to take advantage of the prevailing winds in the upper atmosphere.
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