Curated paths / Across subjects
From history to the kitchen, from language to technology. Follow the question that interests you across subjects.
Choose how you want to explore. Articles are shown 18 at a time.
1–11 of 11 articlesPage 1 of 1
Technology / Understand the mechanism
QR Code correction percentages are approximate measures relative to all codewords. They do not guarantee that a certain fraction of the image area can be erased; location markers and reading conditions matter too.
Open the articleLanguage & culture / Understand the mechanism
In ordinary vertical Japanese typesetting, characters run downward, lines and pages proceed to the left, and the book is bound on the right. In left-to-right horizontal typesetting, characters run to the right, lines proceed downward, pages proceed to the right, and the book is bound on the left. Check the reading order separately from the movement used to open the cover.
Open the articleSpace / Understand the mechanism
The Moon rotates even though it always shows us the same face.
Open the articleEveryday science / Understand the mechanism
The sky's color reflects the path light has taken through the atmosphere.
Open the articleLiving things / Understand the mechanism
Three hearts: one circulates blood around the body, and two send it to the gills.
Open the articleSpace / Understand the mechanism
Space sounds include both physical wave signals shifted into the audible range and observations mapped to sound by other rules. Read how the conversion works, and surprise can become understanding.
Open the articleHistory / Understand the mechanism
The Gregorian calendar adds a day every four years, omits that addition in years divisible by 100, and retains it in years divisible by 400. Distributing 97 leap days across 400 years produces a calendar with an average year of 365.2425 days.
Open the articleLanguage & culture / Understand the mechanism
In a direct transfer from form to paper, character shapes and character positions are reflected together. Viewed straight on with their tops and bottoms aligned, the correct form is the mirror image of the complete line you want to print.
Open the articleFood & everyday life / Understand the mechanism
Glutamate and inosinic acid enhance umami when combined. Ingredient proportions, concentrations in solution, receptor responses, and the overall enjoyment of a dish each need to be considered with their own conditions and methods of measurement.
Open the articleSpace / Understand the mechanism
Earth’s formation about 4.54 billion years ago is an estimate assembled from multiple samples and dating methods. Mineral crystallization, evidence for liquid water and signs of life answer different questions.
Open the articleHistory / Understand the mechanism
Connections carried knowledge and goods over greater distances while also extending power and burdens. Separating what moved, who worked, who chose and where benefits and harms remained lets us examine development without ranking societies along one ladder.
Open the article
