One is the loneliest number that you’ll ever do, especially if you don’t even have a word for it. That’s the situation of the Pirahã people, denizens of Brazil’s Amazon rainforest who have no term for ...

Researchers have found a new relationship between counting ability of Tsimane' individuals and their ability to perform matching tasks that involve numbers up to about 25. The results suggest that in ...

The following is an excerpt from Thinking in Numbers: On Life, Love, Meaning, and Math, by Daniel Tammet, out now from Little, Brown. Ask an Icelander what comes after three and he will answer, “Three ...