It's so simple, I do not know why this isn't part of the building code in hot places. People may not like it for their homes, but for commercial buildings with flat roofs, it's a no-brainer.
Looks like good progress. Less penetration into the residential areas, but progress.
You obviously could live there... it would just be unpleasant.
I lived a year in Singapore where temperatures were in the 80-90 range. I stayed on-campus at NUS and was lucky to have a room with A/C, but it wasn't common. The majority of students make do with big fans and windows. I remember working next to a campus Starbucks outside, marveling at how well designed it was to make students moderately comfortable without A/C. There was an enormous fan, and the area was covered and designed to facilitate air flow.
After my time there I came back to the U.S. and can much more readily handle persistently hot temperatures. It's fairly unusual to expect it to be cool all the time.
I also just got back from a trip to Oman where it was routinely above 90 or 100 all day long, and people there make do without A/C as well.
But, the invention of AC and the development of super-strong residential building codes in response to destructive hurricanes has steered the last ~70 years of home construction towards sealed concrete boxes with air conditioning infrastructure built in.
Many of the classic passive cooling techniques of the old Florida homes are not even legal now. The benefit is your house doesn't collapse in a hurricane.
the development of super-strong residential building codes in response to destructive hurricanes
Evap at 80% humidity is about half the rate at 50%. Still functional.
No, it isn't. I have an enormous oak tree that overhangs the southern roof. My windows have a very low level of solar radiation they allow through. The ambient air temp at night is almost 80F. The house is built of concrete block, and stores heat during the day, releasing it at night. We're routinely at 60-80% humidity.
Just waiting for some solar shingles to be available (hurry up Elon!). Don't much care how long I run the AC every day as long as I net out 0 with solar generation.
We've got the technology now to evolve this even further by doing computer simulations to come up with better designs, and by techniques like 3D house printing with concrete to make intricate ventilation systems that can circulate air through the floors and up through walls with zero energy cost.
A thousand years ago you had to build things this way, you had no alternative, but now it's taken for granted that air-conditioning will solve all problems.
Construction makes a huge difference -- especially airflow. Whoever made my current apartment was a genius because in the winter, the south side gets sun through the windows for about 6 hours, while in the summer there is no direct sunlight in any window. My previous apartment was an oven.
North American attitudes to seasonal temperatures are different than where I live now. In the winter here, the lows here are near freezing (1-2C), and we always have a few days in the summer well over 40C (105F) (luckily once it gets over 35, the humidity drops quite a bit). It's quite normal here not to heat in the winter, nor cool in the summer. Experiencing the seasons is considered to be "culturally enlightening" ;-) And joking aside, I've found that I like this way of living. Like you, I would never have thought it possible before I tried it, though.
Having said that, you can't always do it. I need some heat in the winter these days, due to health conditions. I worry about my mother in law who, at 80, usually refuses to run her AC in the summer. You do need to be careful of your health. You also need to be sensitive to the fact that architects build for the prevailing culture. Where I live, they work very hard to deal with this kind of thing. Where you live, they will probably optimise for something else.
Like I said, it's a very cultural thing -- and that's the beauty of the world. There are different cultures and values, each with their own charms. It's totally fair to say that you like the way you live now (and more power to you!) But it's not impossible (nor bad) to live differently.
That's a pretty apt general description of Las Vegas.
s/Las Vegas/Phoenix[0]: http://www.energyvanguard.com/blog/30576/Heating-or-Cooling-...
They didn't give a damn when those cities were first founded. The issue wasn't probably even on the mind of anyone on the planet. Same is true about cities in seismically-active regions.
It's too late to fix that. You'd have to convince millions to abandon their homes and go... somewhere else.
It's easier to irrigate a flat desert with fertile soil than to move the flat terrain and fertile soil closer to a water source.
Food production is a fairly important component of sustainable human societies, and a major reason for the US (California particularly) having inhabited deserts and semi-arid regions.
You can't stop people from moving and aggregating. Relocating hundreds of millions of people into freshly-built temperate cities is obviously impractical, not to mention more resource-intensive in the short and medium term than air conditioning their current residences. We have to develop techniques that work with the world as it is, not just pine for utopias that might have been.
Maybe people shouldn't live in a desert if can't handle the heat.