Here's how portable water dispensers work and why I switched. John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security.

Credit: Chatrawee Wiratgasem/Shutterstock. The Elandsfontein phosphate mine, a $160m (R2.89bn) South African phosphate project owned by billionaire Patrice Motsepe’s African Rainbow Capital ...