Steve Caplin ponders Jeffrey Katzenberg's new short-form mobile-only streaming service Quibi, which will have a Spielberg horror series viewable only at night. Also hydrogen-powered vertical take-off taxis, Ikea's robotic furniture, a 360-degree rooftop infinity pool for London, how atom bomb testing could help find fake paintings, a new bike direction indicator and taking the guesswork out of best-before dates.
