Curiously, the first patent for a can opener wasn't issued until forty-eight years after Peter Durand secured his 1810 patent for the tin can. It wasn't as though the can opener was an unneeded invention. A tin of roast veal taken on Willi...

We are quite lucky to live in a country like Canada and to have the government that we do. They do a good job of providing our rights and not interfering with our freedoms. I believe that Canada has the right amount of rights and freedoms. ...

At the dawn of the twenty-first century, access to health-care services, their cost and quality constitute key social, political, and economic issues for virtually every country in the world. Identifying the conditions under which health-c...

The Canadian Forest Service (CFS) is a federal government agency with a responsibility to conduct research and analyze information related to the sustainable use of the Canadian forest resource. Because of the importance of the forest in...

The Canadian Parks Service (CPS) is the government agency charged with fulfilling the statutes and policies of Canada's national parks. The first national park was established in Banff, Alberta, in 1885, although parks were not in...

In 1760 the British Parliament approved construction of a canal to carry coal half a dozen miles (approximately 9.6 km) from the mines at Worsley to the city of Manchester. Until the eighteenth century, European canals were generally fina...

Civilizations depend on water supply, and since ancient times people have sought ways of building channels to hold water that would circumvent natural barriers both to the supply of water and to navigation. The Romans and Charlemagne drea...

Canals have been used since ancient times to carry water where it is needed or allow transportation where natural waterways do not go. The canal lock was developed in China, and first used in Europe during the Middle Ages. Locks enable sh...

Mexico 1906 In the northern Mexican state of Sonora lies a quiet mining town called Cananéa. In 1906 this town witnessed a violent social struggle between labor and American capital. In June 1906 miners employed by Colonel William Gr...

In 1987 some residents in the tiny community of St. Gabriel, Louisiana, called Jacobs Drive, the street on which they lived, "cancer alley" because there were fifteen cancer victims in a two-block stretch. Half a mile away, t...

Candace B. Pert is a leading researcher in the field of chemical receptors, places in the body where molecules of a drug or natural chemical fit like a key into a lock, thus stimulating or inhibiting various physiological or emotional effe...

As a television show,Candid Camera enjoyed immense popularity with American viewers at mid-twentieth century even as it fundamentally changed the way in which Americans perceived behavior on the television screen and their own vulnerabilit...

Candidiasis is an infection caused by a species of the yeast Candida, usually Candida albicans. It is a common cause of vaginal infections in women. It may also cause mouth infections in people with reduced immune function, or in patients ...

CANDRAKĪRTI (Tib., Zla ba grags pa; Chin., Yue-cheng; Jpn., Gesshō), Indian Buddhist dialectician. Scholars have identified at least three Candrakīrtis. The first, who will be referred to as "Candrakīrti ...

The leaves and flowering parts of the (cannabis indica) and (cannabis sativa) plants, commonly known as marijuana, have been used for thousands of years for a variety of purposes ranging from recreational drug to medicinal analgesic to rel...

Despite the popularity of marijuana in the United States, fairly little is known about how to treat individuals who become dependent on this drug. In addition, many heavy users of marijuana do not feel that they need treatment. Many resear...

On June 25th, 1981 physical anthropologist Owen Beattie set out on a mission. Using his knowledge of forensic anthropology he wanted to uncover the time-hidden secrets of the Franklin expedition. Once and for all he hoped to substantiate ...

The rain forest canopy consists of the treetop region or, more precisely, of the aggregate of every tree crown in the rain forest, including foliage, twigs, fine branches, and epiphytes. The upper canopy represents the interface between th...

The Canti (Songs) by Giacomo Leopardi Giacomo Leopardi was born in 1798 in Recanati, a very small town in the isolated, mainly rural region of Marche in central Italy. His father, the extremely conservative Count Monaldo Leopardi, was an am...

Cantor set—an infinite set of numbers between 0 and 1, defined by an inductive process. To define this set, start with the closed interval [0,1]. Remove the middle third--the open interval (1/3,2/3). (That is, remove all the points b...

CAO DAI is a syncretistic modern Vietnamese religious movement founded in 1926 by Ngo Van Chieu (1878–1932; also known as Ngo Minh Chieu). An official of the French colonial administration, Chieu was widely read in both Eastern and ...

Capacitance is an electrical effect that opposes change in voltage between conducting surfaces separated by an insulator. Capacitance stores electrical energy when electrons are attracted to nearby but separate surfaces. The voltage across...

Capacity Planning Capacity planning has seen an increased emphasis due to the financial benefits of the efficient use of capacity plans within material requirements planning systems and other information systems. Insufficient capacity can ...

Capillaries are the microscopic blood vessels branching from the arterioles and merging into venules. Despite the fact that there are approximately 40 billion capillaries in the body, they hold only 5% of total blood volume. There are two ...

Capital punishment has been the center of much controversy dating back to its origins. Although the roots of capital punishment can be traced as far back as 1697 BC, arguments over its effectiveness and morality continue in the midst of ...