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Agriculture is the practice of growing crops and rearing animals mainly for food. Farmers also produce other items such as wool from sheep and CBD oil from hemp plants.

In Canada, agriculture is an important industry. Only about 7 per cent of Canada’s land can be farmed. Other marginal (poorer) land can be used to ranch cattle. Aquaculture operations are found on the East and West Coasts and in the Great Lakes. Some crops such as tomatoes, cannabis and flowers are grown in greenhouses in urban centres. Canadian agriculture faces many challenges. Some of these challenges concern crop protection, soil conservation, labour, climate change and health.

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This is the full-length entry about agriculture in Canada. For a plain-language summary, please Agriculture in Canada (Plain-Language Summary).

Henri Joseph Breault, medical doctor, anti-poisoning advocate (born 4 March 1909 in Tecumseh, ON; died 5 September 1983 in Exeter, ON). Breault is known for spearheading a national campaign to prevent accidental childhood poisonings. He advocated for the development of the Palm-N-Turn, a safety cap that drastically reduced child deaths due to poisoning in Canada and around the world.

An epidemic occurs when an infectious disease spreads rapidly throughout a community at a particular time. Several epidemics have occurred over the course of Canadian history, the most disastrous being those which affected Indigenous peoples following the arrival of Europeans.

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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.)

Media convergence refers to the merging of previously distinct media technologies and platforms through digitization and computer networking. This is also known as technological convergence. Media convergence is also a business strategy whereby communications companies integrate their ownership of different media properties. This is also called media consolidation, media concentration or economic convergence. (See also Media Ownership.)

There have been many tragic events in Canada’s aviation history. Some of these have involved Canadian aircraft, commercial as well as non-commercial. In other cases, many Canadians have died in the crash of a non-Canadian aircraft. Crashes that occurred over Canadian soil, or search and rescue efforts in which Canadians have played a large part, are also part of this history.

Although the term SOLID WASTE refers to a wide range of discarded materials (from kitchen scraps to mine tailings), the component known as refuse has the greatest potential for environmental contamination.

The Nature of Things is television’s longest-running science series. It debuted on CBC on 6 November 1960. Originally a half-hour program that demonstrated scientific concepts, it evolved into an hour-long documentary during renowned scientist David Suzuki’s tenure as host (1979–2023). The groundbreaking program was among the first to present scientific findings on subjects such as HIV/AIDS and climate change. Over the course of more than 60 seasons and over 900 episodes, The Nature of Things has been seen in more than 80 countries. It has received 17 Gemini Awards and seven Canadian Screen Awards.

Established in 1990, the Canadian Space Agency (CSA) promotes the peaceful use and development of space for the social and economic benefit of Canadians. It also coordinates federal government contributions to the CSA’s various partners in Canada and abroad. The agency’s current mandate includes the Canadian astronaut program, satellite development, space science and technology programs, space stations and robotics.

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COVID-19 vaccines were the first vaccines to be developed, tested, produced and delivered amid a global pandemic (see Covid-19 Pandemic in Canada). As the typical vaccine development, testing and regulatory approval process can take anywhere from 10 to 15 years, several distinctive strategies, coupled with previous research work in key areas, combined to expedite the approval of COVID-19 vaccines, especially messenger ribonucleic acid (mRNA)-based vaccines. Among the most significant of this previous work was the research undertaken by the team of Pieter Cullis, Michael Hope and Thomas Madden at the University of British Columbia that began in the early 1980s. Their work, which focused on studying and developing lipid nanoparticles (LNPs), as well as pioneering the technology to produce them, provided the key to making COVID-19 mRNA vaccines possible.