i see @kanyewest is scared to start so i will start
one of my huge genius ideas is to cover a city with a roof and use air conditioning …
now this can NOT be done with an existing city …
but is trivially simple to design a city from scratch that would be 100% air conditioned …
i can engineer this to the point where it would require ZERO NET ENERGY to maintain perfect 75F year round … and in fact easily generate more energy than it consumes, all from only sunlight with no use of fossil fuels.
how ?
1 - ground source heat pumps
2 - city roof lined with solar panels
3 - greenhouse design to trap heat
4 - motorized reflectors that can control the amount of sunlight and heat entering the city
5 - heat exchangers for recapturing heat during ventilation
6 - exhausts local to the sources of “pollution” such as kitchens and bathrooms
7 - only electric transportation, heating, cooking etc
ALL THIS TECHNOLOGY EXISTS AND IS PROVEN
Golden Gate bridge has 1,300 meter span and was built 80 years ago. Central Park in Manhattan is 850 meters wide. In other words even 80 years ago we had the technology to cover the entire Central Park with a roof without putting a single support column anywhere in the park itself. Imagine Central Park as an air conditioned space where you can tan in January ? Perhaps with heated lakes where the water is 85F year round ? It is totally technologically possible.
of course there is no need to put the entire Central Park under a single span, i’m just saying it is possible.
The point is you could fit anything under that roof - from an Olympic Stadium to a high-rise office building.
and just like many stadiums today can open or close the roof you could implement similar features in the city roof if desired.
or you could simply just go to the roof itself … you could even build an entire second city above the roof …