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

Ok, but lets get a better name.

"Cool Block" sounds like a ban on cool people. Like if you show up, and you're a really cool person, they'd stop you and say "WHOA! HOLD IT!!! WE HAVE A COOL BLOCK IN PLACE! LAME PEOPLE ONLY! You'll have to leave! And take your 5 girlfriends with you! Your lifestyle of having multiple types of sex, with multiple people at once, is far too cool for us here!"

That's pretty cool 😎

we'll do literally anything but what needs to be done.

They really need to be careful, though,
they wouldn't want to make it too cool for school...

Meh, I was thinking of a giant ice cube. 😬

Whatever became of that magic cooling paint that fluoresces sunlight into infrared?

Trees and reflective surfaces are great, but we also need to think about emergency backup power for cooling centers during grid failures - check out some options on gearscouts.com to see what kind of wh/$ value is possible these days.