> Heatproof shelters aren't solving the problem

> How about the materials required? The scale of manufacturing? The impact of the manufacturing on the environment? The impact of shipping and installing them on the environment?

So we don't have the competence or resources to directly help people with heat waves but we have the competence & resources for a bigger than Manhattan Project scale effort for climactic scale projects such as carbon capture & moving humanity underground?

Perhaps there's some already invented devices which can cool a dwelling?