Heat waves and how to cope with heat

 During a heat wave buildings hold in heat;a city's dark surfaces absorb sunlight and trap heat.This is known as the urban heat island effect.

                       Cities need to build green infrastructure and have green roofs and green walls to fight heat.

Some people paint rooftops white to combat the urban heat island effect.

                          Cities including London need to increase the amount of gardens and parks and street trees which  provide shade in order to cope with warming temperatures.