Japan is rolling out “human fridges”, enclosed cooling units intended to help people cool down during increasingly severe summer heat. The devices reflect concern over heatstroke as extreme temperatures create a growing public-health risk.

More than 53,000 people in Japan have received heatstroke treatment in the past two months, with 79 deaths reported. The Do Hiemon, meaning roughly “The Cooling Box”, is being installed in public spaces and sold to businesses for ¥1.5 million (£6,973) each; its design was inspired by freezer vending machines.