Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in ...

A new study reveals that Srinivasa Ramanujan’s century-old formulas for calculating pi unexpectedly emerge within modern theories of critical phenomena, turbulence, and black holes. In school, many of ...

Preserved lemons are lemons (usually whole, split, or quartered) packed in salt and brined in their own or additional lemon juice—essentially, they’re pickled lemons. Especially common in Middle ...