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Cloud Types: All Ten and How to Tell Them Apart
All ten basic cloud types, the three altitude bands they divide into, what each looks like overhead, and which ones actually produce precipitation.
Military Ranks: Every Pay Grade in All Six Branches
Every US military rank by pay grade, across the Army, Marine Corps, Navy, Air Force, Space Force and Coast Guard, and the title traps that catch people out.
Ring Size Chart: Every US Size in Millimetres
Every US ring size from 3 to 13 with its inside diameter and circumference, two ways to measure at home, and the reasons the same finger measures differently.
Morse Code: The Full Chart, Timing and How It Works
Every letter, digit, punctuation mark and procedural signal in international Morse code, with the timing rules that govern them and the places the code is still working.
Birth Flowers by Month: All 12 and What They Mean
Every month has a birth flower, and most have two. Here are all twelve photographed, the meanings attached to them, and why the pairings were never standardised.
Types of Pasta: 25 Shapes and What Each One Suits
Long strands, tubes, twists and soup shapes: 25 types of pasta shown and named, with the cooking time for each and the kind of sauce its surface is built to hold.
Mattress Sizes: All Six Standard Beds, Measured
Twin through California King, measured in inches and square feet, with the room each size needs and the gap between the size on the label and the mattress that turns up.
ASL Alphabet: All 26 Hand Signs and How to Form Them
The ASL alphabet is 26 handshapes made with one hand. Every letter is photographed here, with the six that are variations of a fist and the two that need movement.
Military Alphabet: All 26 Letters, Spelled and Pronounced
Alfa, Bravo, Charlie: the military alphabet is a set of 26 code words that keep letters apart over a noisy radio. Here is every letter, how to say it, and the history behind the list.
Life Expectancy by Country: Top 15 Ranked by Age at Birth
Monaco has the highest life expectancy by country, at 86.5 years at birth against a world average of 73.3. This ranking covers the top 15 entries in the UN list, with the male and female split for the leaders. It also shows where the United States, United Kingdom, Canada, India and China land.
Largest Cities in the US: Top 10 by Population
New York City leads the largest cities in the US with 8,584,629 residents, more than double second-placed Los Angeles. This ranking covers the top 10 with population, change since 2020, land area and density, and sets the city figures beside the five biggest metro areas.
Biggest Cities in the World: Top 10 by Population
Jakarta is the biggest city in the world, home to 41.9 million people, ahead of Dhaka at 36.6 million and Tokyo at 33.4 million. This ranking covers the top 10 with populations, projections to 2050, rank changes and the story behind Tokyo losing the top spot.
Most Common Last Names in the US: Top 10 Ranked
Smith holds the top spot among the most common last names in the United States, with 2,369,644 people in the 2020 Census. This ranking covers the ten biggest surnames with their counts, earlier ranks, origins and the race and Hispanic origin makeup of each name.
Most Dangerous Cities in the US: Top 10 by Violent Crime
Memphis, Tennessee has the highest violent crime rate among US cities of 100,000 or more, at about 1,849 per 100,000 residents. This ranking covers the top 10 with population, violent crime counts, violent crime rates and murder rates, and explains what the figures can and cannot say about a place.
Safest Countries in the World: Top 10 by Peace Score
Iceland is the safest country in the world, ranked first of 163 countries with a score of 1.161. This ranking covers the top 10 with scores, homicide rates and verifiable facts, and shows where the United States, United Kingdom, Canada and Australia land.