Consider the overlap between people that are cool and people that are physically attractive. The city is too hot? Keep the hot ones out to bring the average down. Ez.

Tl;dw: Replacing pavement with green space (vegetation), trees for shade, and painting pavement and rooftops with lighter colors to reflect heat.

All, in my opinion, relatively simple to implement compared to the potential increase in livability. A sea of pavement is depressing enough even before the heat illness and deaths

For a time these would pop up as suggestions on my google keyboard by typing two emojis, but it eventually dissapeared :/

Anyway,

I agree with @[email protected], since the symptoms appeared suddenly like that. At least it could provide some clarity as to the cause and/or potential solutions