NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

“For most people, one or two coffees a day is fine,” says Dr Firoozi. “But if you have risk factors for heart disease, such ...

Do you earn more or less than the average person who does your job, or the typical worker where you live? You can use our special calculator here, which draws on official ONS data, to see how your ...

Shape Tools is a collection of geodesic tools that are installed in the Vector menu, on the toolbar, in the field calculator, or in the Processing Toolbox. Geodesic is the shortest path between two ...