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786 articles found
Earth science
A geyser is a hot spring that shoots out groundwater heated underground, together with steam, at regular intervals. This article covers where the name came from, the conditions gey
Tourism studies
Why do people travel, and why do they choose a particular place? This article explains the origins of push-pull theory, push factors as travel motives, pull factors as destination
Statistics
The coupon collector’s problem asks how many random draws it takes, on average, to collect every type at least once. Learn how the average is calculated, what the numbers look like
Journalism & communication
People today live in an age of information overload, with information pouring indiscriminately through the media. This has brought the importance of media literacy to the forefront
Tourism studies
Last chance tourism is travel to see vanishing landscapes, wildlife, or cultures before they are gone. This piece covers the concept and its origins, why people are drawn to it, we
Information technology
The Two Generals’ Problem is a thought experiment showing that, over a channel where messages can be lost, two parties can never be completely certain they have agreed to act toget
Earth science
Snowball Earth is the hypothesis that Earth’s surface was once almost entirely covered in ice during the Cryogenian Period. This article explains how the idea arose, the ice-albedo
Journalism & communication
Investigative reporting is one of the core roles of modern journalism, playing an important part in illuminating society's darker aspects and uncovering the truth. This material ai
Information technology
How did the early internet keep working despite small differences between implementations? This article covers where Postel's Law (the Robustness Principle) came from, why it matte
Economics
Gold has long been valued as a precious asset, and its importance becomes even more apparent whenever economic uncertainty increases. The gold market is influenced by the combined
Library & information science
A reference interview is the conversation in which a librarian refines a user’s first question and finds the information the person really needs. This article covers why it is need
Chemistry
Avogadro’s number is the number of particles in one mole of a substance, about 6.02 × 10²³. This piece explains what it means, ways to grasp its size, how Avogadro, Cannizzaro, Los
