Cities can heat up by an extra 9°C (16°F) compared to surrounding areas - an effect called the 'urban heat island'. But painting roofs in colours that reflect heat back into space can keep buildings significantly cooler, research has found. Scroll down for videoCities can heat up by an extra 9°C (16°F) compared to surrounding areas - an effect called the 'urban heat island'. This reduction in temperature could potentially offset around 25 per cent of the heat-related mortality associated with the urban heat island during a heatwave. Around half of deaths during heatwaves - mainly the elderly - are thought to be caused by the extra heat in cities.

Source: Daily Mail April 05, 2019 12:44 UTC