Liam Chen

World Affairs Reporter

Liam Chen covers geopolitics, diplomacy and global development, with a focus on making complex international stories accessible.

81 articles

World

What Is a Single Market?

A single market treats several countries as one territory for trade, letting goods, services, capital and people move freely…

Liam Chen · · 5 min read
World

Purchasing Power Parity Explained

Purchasing power parity adjusts for the fact that money buys more in some countries than others. Here is what PPP means, how the…

Liam Chen · · 6 min read
World

What Is a Tax Haven?

A tax haven is a jurisdiction that offers very low taxes and high secrecy to attract money from elsewhere. Here is how tax havens…

Liam Chen · · 6 min read
World

How Country Credit Ratings Work

A sovereign credit rating is a verdict on how likely a government is to repay its debt. Here is what the letter grades mean, who…

Liam Chen · · 6 min read

What Is Metadata?

Metadata is data that describes other data, such as the date a photo was taken or who sent an email. This guide explains what…

Liam Chen · · 6 min read

What Is an Algorithm?

An algorithm is a precise set of step-by-step instructions for solving a problem or completing a task. This guide explains what…

Liam Chen · · 5 min read

What Is a Search Engine?

A search engine is a tool that helps you find information across the web by matching your query to relevant pages. This guide…

Liam Chen · · 5 min read

What Is a Web Browser?

A web browser is the program you use to find and view websites. This guide explains how browsers work, what features matter, and…

Liam Chen · · 6 min read