Supply and Demand
Supply and demand is the foundational theory of how prices and quantities are set in a market economy. It holds that the price of a good settles at…
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Humorism: The Four Humors
Humorism, or humoral theory, was the belief that human health depends on the balance of four bodily fluids, called humors: blood, phlegm, yellow…
Polar Bear
The polar bear is the largest land carnivore on Earth and the undisputed master of the Arctic. Superbly adapted to one of the planet's harshest…
Apollo 11
Apollo 11 was the spaceflight that first landed humans on the Moon. On July 20, 1969, the American astronauts Neil Armstrong and Buzz Aldrin walked…
Cold Fusion at Room Temperature
The 1989 Fleischmann-Pons announcement claimed that palladium electrodes immersed in heavy water produced excess heat consistent with…
Canada
Canada is a country in North America, the second-largest in the world by total area, stretching from the Atlantic Ocean in the east to the Pacific in…
Saturn
Saturn is the sixth planet from the Sun and the second largest in the Solar System, famous above all for its magnificent rings. A giant ball of gas…
Petra
Petra is an ancient city in southern Jordan, famous for its monumental buildings carved directly into rose-coloured sandstone cliffs. Once the…
John D. Rockefeller
John D. Rockefeller was an American business magnate who became the dominant figure in the early oil industry and, by most accounts, the wealthiest…
The Simulation Hypothesis
The simulation hypothesis is the proposal that the reality we experience might actually be an artificial simulation, such as an immensely…
Panspermia
Panspermia is the hypothesis that life exists throughout the universe and is spread between worlds by space dust, meteoroids, asteroids, and comets.…
Social Media Use and Adolescent Depression: Causal Relationship Under Investigation
The proposition that social media use directly causes depression in adolescents remains under active scientific investigation. While correlational…
Amazon Rainforest
The Amazon Rainforest is the largest tropical rainforest on Earth, a vast sea of green covering some 5.5 million square kilometres across nine South…
Volcano
A volcano is an opening in a planet's crust through which molten rock, gas, and ash erupt from the hot interior to the surface. On Earth they are…
Katherine Johnson
Katherine Johnson was an American mathematician whose precise calculations of orbital mechanics were critical to the success of the United States'…
Arc Flash Hazard Mitigation in Industrial Electrical Systems
An arc flash is a high-energy electrical fault that produces an explosive release of heat, light, and pressure when a phase-to-phase or…
Nitrogen Cycling in Prairie Soils of the Canadian Prairies
Nitrogen cycling in Prairie soils is a well-documented biological and chemical process that determines agricultural productivity across Manitoba,…
CRISPR-Cas9 Gene Editing: Mechanism and Applications
CRISPR-Cas9 is a programmable nuclease that uses a guide RNA to direct the Cas9 enzyme to a specific genomic sequence, where it introduces a precise…
The Colosseum
The Colosseum is a giant amphitheatre in the centre of Rome, the largest ever built and one of the most recognisable monuments of the ancient world.…
Handwashing Prevents Infection
Washing the hands with soap and water is one of the simplest and most powerful tools in all of medicine for preventing the spread of disease. It is a…
The Gaia Hypothesis
The Gaia hypothesis proposes that life and its physical environment on Earth form a single, self regulating system that keeps the planet suitable for…