You are browsing the English interface. Articles without a published translation are clearly marked and open in Korean.
785 articles found
Chemistry
Environmental problems involving chemicals are recognized as among the serious environmental problems worldwide. Various chemicals released by human activities pollute the air, wat
Education
Why did students tutored one-to-one outscore 98% of an ordinary class? This piece explains Bloom’s 2 sigma problem: the three teaching methods Bloom compared in 1984, what standard
Logistics
How do milk and vaccines reach us while staying cold? This article covers the history of the cold chain from ice-packed shipping to refrigerated trucks, its four stages and tempera
Food & nutrition
In modern society, food plays an indispensable role in our daily lives. Various food additives that help maintain the taste and quality of food and allow it to be stored longer hav
Physics
Why does a free kick bend and a curveball drop? This article covers Newton's tennis ball, Magnus's cylinder experiment, the pressure difference created by spin, its uses in sports
Food & nutrition
Why doesn't honey spoil easily even though it contains water? This article explains water activity, a measure of the free water in food, and how it is measured, the limits below wh
Economics
Can rebuilding after a disaster or war really make a society richer? This piece explains the broken window fallacy through Frédéric Bastiat’s 1850 parable of the seen and the unsee
Earth science
An atmospheric river is a long, narrow band of water vapor, evaporated from warm oceans, that flows along the lower atmosphere for thousands of kilometers. We look at where the nam
Film & media
Rack focus shifts the sharp subject within a single shot by changing the lens focus, guiding the viewer's eye without a cut. This article covers how it works, what it says in a sto
Education
Educational philosophy is an academic field that identifies the nature and values of education and offers practical direction through systematic, in-depth inquiry into its purposes
Earth science
Drought is one of the natural disasters with the most severe and widespread impacts, causing a variety of environmental, economic, and social problems. Climate change and populatio
Information technology
Advances in AI technology are bringing new changes to our lives. We can now interact with artificial intelligence (AI) that thinks and learns like humans. Among these technologies,
