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Physics

A Thunderclap from a Clear Sky: The Sonic Boom

A sonic boom is the loud sound made when the shock waves created by an object moving faster than sound reach the ground. This article explains how sonic booms form, the small sonic

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Earth science

When the Whole Planet Froze Over: Snowball Earth

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

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Business administration

Watching Changes Things: The Hawthorne Effect

Why does performance often jump right after a new management practice is introduced, only to slip back later? This article explains the Hawthorne effect: its definition and the ori

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Food & nutrition

The Wisdom of Cooking Corn in Ash Water: Nixtamalization

Nixtamalization is a traditional Mesoamerican method of cooking and steeping dried corn in an alkaline solution such as limewater, then washing and hulling it. Learn its history, h

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Design

The Secrets to Packaging Design That Makes Brands Shine

Packaging design is an important factor that determines a product's first impression and directly influences consumers' purchasing decisions. Today's consumers consider more than a

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Psychology

The Memory of Unfinished Tasks: The Zeigarnik Effect

Why do unfinished tasks linger in our minds longer than completed ones? This article explains the Zeigarnik Effect: its origins, how memory and psychological tension work together,