A seemingly impossible math puzzle, discovered stuck to a tree by a passing hiker, has left the internet well and truly stumped. Despite living in an increasingly digital world, math remains something ...

In looking at the wide-spanning history of businesses, most started with an idea to solve a problem. Problem-solving is in itself a business model. Many entrepreneurs seek to solve the unsolvable, ...

A stressful job that can’t be quit. A relationship that’s as painful as it is loving. Life serves up many problems with either no solution or only imperfect solutions that seem either just as bad or ...