Kit Knightly “This Week in the Guardian” was my idea. It was my baby. I had it at the back of my head for almost a year. A weekly...

Colin Todhunter Back in November 2016, the Indian government decided to remove all 500- and 1000-rupee notes from circulation overnight without prior notice. This effectively removed 86% of cash...

Yesterday, Visa's payment system crashed in Europe. Millions of people were unable to complete purchases. Some found themselves trapped overseas. It was a small glitch, apparently, but could have...