Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Monday marks the start of 2012’s final quarter. The big question for me is deciding where the stock market is ...

Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...

One of the most basic things you can do in the Finder in list view is expand a folder by clicking a triangle to the left of its name. This unfurls its contents. (Option-click and it expands all ...