Pick a subject, choose your level, and dive in. Each quiz is written and fact-checked by hand, with an explanation after every answer.
111 quizzes · page 2 of 5
Roots, scripts and the names for things you already do with language.
Which language has the most native speakers worldwide?
The constants, shapes and terms worth actually knowing.
What is the value of pi to two decimal places?
The philosophers worth knowing and what they actually argued.
Which philosopher wrote "I think, therefore I am"?
The discoveries that changed what medicine could promise.
Insulin is produced by which organ?
What the words in every economic headline actually mean.
What is the currency of Japan?
The machinery of government, described rather than argued about.
How many states make up the United States of America?
Landmark buildings and the styles you can spot from the street.
In which city does the Eiffel Tower stand?
The canals, railways and machines that shortened the world.
Which canal connects the Mediterranean Sea to the Red Sea?
The games and machines that built the biggest entertainment industry.
Which company created the character Mario?
Comics and animation across America, Europe and Japan.
Superman first appeared in which comic publication?
The designers, fabrics and cities behind what people wear.
Which designer is credited with popularising the "little black dress"?
The major world religions, their books and their practices.
The Quran is the central religious text of which faith?
What the legal phrases everyone repeats actually commit a court to.
The principle that a defendant is treated as innocent until proven otherwise is called what?
Atmosphere, energy and the cycles that keep things running.
Which gas is the most abundant in Earth's atmosphere?
The expeditions that redrew the map, credited accurately.
Which expedition was the first to circumnavigate the globe?
The engineering principles behind structures and machines.
Reinforced concrete combines concrete with which material?
Classic puzzles and the logic that makes them work.
A standard sudoku grid is what size?
What happens when substances meet, and why.
What is the chemical formula for water?
Motion, energy and light, described without the equations.
The speed of light in a vacuum is closest to which value?
From the inside of a cell to the logic of natural selection.
What is generally considered the basic unit of life?
The planet from crust to core, and the processes shaping it.
What is the outermost solid layer of the Earth called?
The physics of the sea and the life that adapted to it.
What is the deepest known point in the ocean?
Record holders, adaptations and the dinosaur connection.
What is the largest living bird species?
How plants feed, reproduce and survive the year.
Plants produce their own food through which process?