蜜芽传媒

Phoenix in the US state of Arizona has been trialling so-called 'cool pavements' designed to reduce the overall urban heat - which reached a decidedly uncool 114 degrees Fahrenheit this summer.

To hear more, the 蜜芽传媒's James Coomarasamy has been speaking to the mayor of Phoenix, Kate Gallego.

"It is a light coloured sealant that we are putting on our roads, it retains less heat... and we've found a significant change of 10-12 degrees Fahrenheit on our roads locally," she tells us.

Photo shows: The city of Phoenix, Arizona at dusk. Credit: Getty Images