Every Specialty Digest Story, One Feed
All of our reporting and essays, across every department, in a single reverse-chronological stream. Filter by section to narrow it down.
What Is the Difference Between a Cold and the Flu?
The clearest difference between a cold and the flu is speed: a cold creeps in gradually over several days, while…
How Do Electric Car Batteries Actually Work?
An electric car battery works by shuttling lithium ions back and forth between two electrodes, releasing electrons that power the…
What Causes Earthquakes?
Earthquakes are caused by stress: massive slabs of Earth’s crust push against each other for years or centuries, and the…
What Is a Business Model Canvas?
A business model canvas is a one-page tool for mapping, testing, and rebuilding how a company creates, delivers, and captures…
What Was the Silk Road?
The Silk Road was not a single road at all, but a sprawling network of overland and maritime trade routes…
Why Is the Ocean Salty?
The ocean is salty because rivers and underwater volcanic vents have been adding dissolved minerals to it for roughly four…
How Deep Is the Ocean, Really?
The ocean averages about 3,682 meters deep — roughly 12,080 feet, or more than two miles down — according to…
How Does the U.S. Census Actually Work?
The U.S. census works by counting every person living in the country on a single day, at their actual address,…
What Is Critical Thinking, and How Do You Develop It?
Critical thinking is the ability to think clearly and rationally about what to do or what to believe, using evidence…
How Do Venture Capital and Angel Investing Actually Work?
A founder pitching a $2 million seed round and a founder pitching a $200,000 pre-seed check are often talking to…
What Is GDP, and Why Does It Matter?
Gross domestic product, or GDP, is the total dollar value of all final goods and services produced within a country’s…
What Is a Black Hole?
A black hole is a region of space where gravity has become so extreme that nothing — not even light…
How Much Exercise Do Adults Actually Need?
The baseline that major health authorities converge on is 150 minutes a week of moderate-intensity aerobic activity, plus muscle-strengthening work…
Why Are Rainbows Curved?
Rainbows are curved because every rainbow is actually a full circle, and the arc people see is only the portion…
How Do You Actually Give Effective Feedback?
Effective feedback is specific, close to the moment it describes, and structured around a concrete behavior rather than a general…