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808 articles found
Journalism & communication
Why do we pick the media we do? Uses and Gratifications Theory, systematized in the 1970s by Elihu Katz, Jay Blumler, and others, sees people not as passive receivers of messages b
Chemistry
Chemical bonds form through the interaction of atoms and electrons and determine the properties of matter. Explore the basic principles of chemical bonding and how ionic, covalent,
Library & information science
The Mundaneum was a vast index-card archive founded in Brussels by Belgian lawyers Paul Otlet and Henri La Fontaine to gather the world’s knowledge in one place. This article cover
Robotics
Grey Walter’s Tortoises were small robots built in the late 1940s by British neurophysiologist William Grey Walter that explored their surroundings on their own using just two vacu
Tourism studies
Ecotourism is an important form of tourism that protects the natural environment and ecosystems while revitalizing local economies. The role and importance of ecotourism in buildin
Chemistry
Why does salted cabbage release its water overnight? This article covers what osmosis is, the three factors that drive it, everyday examples, and reverse osmosis, the technology th
Logistics
What is the secret that lets us buy cosmetics from overseas with a single click online and put imported bananas on our breakfast tables? It is all thanks to a vast logistics system
Psychology
The Asch conformity experiments, begun by social psychologist Solomon Asch in 1951, showed that people often go along with a group’s clearly wrong answer on a simple line-length ta
Food & nutrition
Two foods with the same 20 g of protein can differ in quality. This article explains the Protein Digestibility Corrected Amino Acid Score (PDCAAS): essential amino acids, the three
Film & media
A bone becomes a satellite, a match becomes a desert sun—what is that edit? This article explains the match cut: how it differs from a jump cut, graphic, action, and auditory types
Information technology
The Internet of Things connects everyday objects to the internet so they can collect and share data. This article looks at what IoT is, the key technologies behind it, the fields w
Economics
A Pigouvian tax charges an activity that harms others a tax equal to that harm, so market prices reflect the true social cost. Learn about externalities, how the tax corrects the m
