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Nights in Las Vegas Are Becoming Dangerously Hot
(www.nytimes.com)
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this post was submitted on 12 Aug 2024
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There's a lot of farming being done right in the US Southwest now that's only profitable because the water is massively subsidized. The first thing to do is to make them pay something closer to the real cost. Nobody should be growing rice, cotton or almonds in the Central Valley. That's just burning public money and squandering a scarce resource. If they can't figure out a more suitable alternative crop, let 'em go bust.
As for A/C, it's a lousy, wasteful solution to hot climates compared to passive construction, insulation, heat pumps and other technologies (some very old). But anyone in Vegas with a pool or lawn needs some immediate education. And I'd be reluctant to encourage people to live in places like that when there are more temperate places they could live in if they wanted to.
The farmers have the most senior water rights, so there's a lot of legal hurdles to that solution. It's definitely something that needs to happen though. Letting them go bust means the Southwest US needs to get food from somewhere else, most likely shipped in on trucks. It's not as simple as people make it out.
Heat pumps are AC in reverse, so why's that so much more efficient? And most new homes are built with good insulation and lawns are illegal for new homes. Most grass has been removed and replaced with rocks, only older homes are allowed to keep their lawns. There's cash incentives to get them to remove it though. In fact, Las Vegas has actually decreased it's water usage in the past few decades, while increasing the population.
More energy is used in the US to heat homes than to cool them, so I'm really not seeing why people should live elsewhere. At least not from a pure energy use standpoint.