Countries & Cities

Page 2. Compare city growth, population density, rents and urban indicators, with clear geographic definitions, data vintages and reproducible examples.

October 19, 2026 · Countries & Cities

Simplified fictional water balance: Facility A withdraws 100 and consumes 20; B withdraws 40 and consumes 35.

Water Withdrawal vs Consumption: Read City Water Claims Carefully

Distinguish withdrawal, consumption, return flows and water-use intensity before interpreting city water claims.

Read the article →

October 19, 2026 · Countries & Cities

Two invented five-worker groups both average 20 minutes, but their trip distributions differ.

Average Commute Time: What a City Ranking Leaves Out

Look beyond average commute time to distributions, worker definitions, mode, geography and uncertainty.

Read the article →

October 19, 2026 · Countries & Cities

Fictional apartments: A costs $1,400 plus $200 utilities; B costs $1,550 including those utilities.

Comparing City Rents: Asking Rent, Contract Rent and Gross Rent Answer Different Questions

Compare asking, contract and gross rents without mixing utilities, populations, time windows or affordability measures.

Read the article →

October 18, 2026 · Countries & Cities

Fictional places with 100,000 residents each have densities of 2,000 and 500 per square kilometer because their areas differ.

Population Density: Why a City Average Can Hide How People Actually Live

Understand how boundaries, land area and weighting change population-density comparisons.

Read the article →

October 17, 2026 · Countries & Cities

Fictional 100 local currency units equal 25 market-rate dollars or 50 basket purchasing-power units

PPP vs Exchange Rates: Compare Countries Without Mixing Questions

Understand purchasing power parity and market exchange rates, with a simple example showing why country comparisons can change.

Read the article →

October 17, 2026 · Countries & Cities

Heat-map checklist: identify the temperature measured, the observation time, and the exposed population

Urban Heat Maps: Surface Temperature Is Not Air Temperature

Interpret urban heat maps by checking surface versus air temperature, measurement time, shade and the people exposed.

Read the article →

October 17, 2026 · Countries & Cities

Fictional income estimates of 70,000 and 72,000 dollars with margins of error of 4,000 and 5,000 dollars

ACS Margins of Error: When a City Ranking Is Too Precise

Read American Community Survey estimates with their margins of error and avoid treating small differences as a definite city ranking.

Read the article →

October 17, 2026 · Countries & Cities

Fictional population of 500,000 within a municipality versus 1.5 million in the wider metropolitan area

City vs Metro Population: Why the Boundary Changes the Answer

Compare city and metropolitan population figures fairly by checking boundaries, reference dates and the purpose of each geography.

Read the article →

October 16, 2026 · Countries & Cities

Editorial illustration of an inclusive neighborhood with transport and community services

Poverty Day 2026: How to Read City Poverty Data Fairly

Ahead of October 17, compare income poverty, housing costs and service access with a practical guide to fairer country and city comparisons.

Read the article →

October 16, 2026 · Countries & Cities

Editorial illustration of a rain-resilient neighborhood with drainage and green space

Disaster Risk Reduction 2026: What Makes a City Resilient?

After October 13’s UN observance, learn how to assess early warnings, building safety and recovery data without relying on a single city ranking.

Read the article →