Effective Strategies and Drawbacks in Reducing Health Risks in Extreme Heat

It's estimated that by 2050 more than 70 per cent of the world's population will live in cities. Urbanisation carries many benefits, but it also threatens to intensify the climate crisis. So, how do we better design our cities to minimise the "urban heat island" effect? The solutions are out there, but do we have the will to put them into practice?