It was an engineering problem that had bugged Zhibin Yu for years — but now he had the perfect chance to fix it. Stuck at home during the first UK lockdown of the Covid-19 pandemic, the thermal engineer suddenly had all the time he needed to refine the efficiency of heat pumps: electrical devices that, as their name implies, move heat from the outdoors into people’s homes.

Apple just released iOS 17, allowing users to play around with the new features like Standby, NameDrop, and Adaptive Audio before the iPhone 15 starts deliveries.