Near a soft-drink bar in the main building of the University of Ottawa hangs a crudely crayoned sign: “S’il vous plait—please—pas de bouteilles—no bottles—dans le—in the—gym.” Students shout to each ...

For years, Raspberry Pi — the world’s most innovative tiny computer — has turned the tech world on its head. This plug-and-play computer isn’t much larger than a credit card and fits easily in your ...