As the mercury soars in Japan, the World Exposition in Osaka has moved into full gear to beat the summer heat, with firms showcasing their latest cooling technologies while the organizer urges visitors to take measures to ward off heat exhaustion.Daikin Industries Ltd., a major Japanese air conditioner manufacturer, has built the Ice Cool Spot, a rest area inspired by the ancient Japanese icehouse. It uses panels of ice on the walls to lower the temperature inside by 5 C compared with the outside.Solar panels on the building's roof collect sunlight during the day and use the energy to freez…READ FULL ARTICLE