Re: Heating a City

> Slightly less crazy, another poster mentioned doming the city. I'd submit
> that a dome is impractical and unnecessary, and all you need to do is
> *roof* it (and possibly wall it) with glass. Build a literal greenhouse,
> and the rest takes care of itself.

What's the largest enclosed area currently in the world?  To enclose a
reasonable city will require square miles.

The largest area under glass is 200,000 square meters at the Bangkok
air****t http://www.dupont.com/safetyglass/lgn/34/pdfs/bangkok_air****t.pdf


The largest inflated dome seems to be 280 feet diameter
http://static.monolithic.com/domenews/2000sum/index.html

I doesn't even need to be a free span; one can have pillars and such.
Heck, if need be it can be an inflatable dome (although I assume there
are strong technical limits on even that.


>
> Having a perpetual 20 degree hot spot would do interesting things to the
> local weather.
>

Yep.