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Learning from Las Vegas: Sustainable vs. Susceptible

78 点作者 jeffreyrogers将近 3 年前

9 条评论

hervature将近 3 年前
As someone who has lived in Las Vegas, this person seems to not give credit where credit is due. First, I don&#x27;t know how they weren&#x27;t able to find the cycling path from the store. You can actually see the store and its solar panels from the entrance [1]. Second, the exact thing they are a proponent for is actually the root cause of the water crisis in the southwest. Growing things in a desert. It takes water, a lot of water. The reason why you don&#x27;t see much green in Las Vegas is because it is a huge water use. So, while the slightly cooler ground directly beneath the tree is nice, it really is the exact opposite of sustainable. Through initiatives like paying to rip up grass lawns, Las Vegas has actually been able to reduce water use by 30% while growing probably something close to 10% in the last 3 years. Point to anywhere else in the US that has actually reduced usage of anything in the last 3 years. This is all with the huge waste of water that is Lake Las Vegas and the golf courses. Which goes back to the main point, the water crisis in the southwest is purely a function of agricultural use in California and to a smaller extent Arizona. Of course Las Vegas relies on outside agriculture but there is going to have to be a shift in the coming decade for more sustainable farming practices in the southwest.<p>[1] - <a href="https:&#x2F;&#x2F;www.google.com&#x2F;maps&#x2F;@36.1210033,-115.3267191,3a,75y,199.22h,74.14t&#x2F;data=!3m7!1e1!3m5!1s91Nsh6naa5UspsJBkFkWfQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D91Nsh6naa5UspsJBkFkWfQ%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D68.011284%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;maps&#x2F;@36.1210033,-115.3267191,3a,75y,...</a>
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criddell将近 3 年前
&gt; Without modern machinery and a national network keeping this place supplied with essentials there’s no way the current population of 2,200,000 people could survive in this environment. Las Vegas is basically a space colony.<p>Isn&#x27;t that true of every large city? Is there any city of millions of people where you could put a wall around it and it would be self-sustaining? All cities rely on having food trucked in, use electricity mostly generated elsewhere, rely on water that comes from outside the city, etc...
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anonymousiam将近 3 年前
Nice to see some local photos. I bought my ebike at Las Vegas Cyclery.<p>It turns out that Vegas is getting a lot better with regard to water usage. Despite a big increase in population and new houses, usage has been trending down. <a href="https:&#x2F;&#x2F;lasvegassun.com&#x2F;news&#x2F;2019&#x2F;sep&#x2F;22&#x2F;las-vegas-water-use-dropped-prominent-residents&#x2F;" rel="nofollow">https:&#x2F;&#x2F;lasvegassun.com&#x2F;news&#x2F;2019&#x2F;sep&#x2F;22&#x2F;las-vegas-water-use...</a><p>I think most of the drain from Lake Mead is coming from California, which has been moving in the opposite direction. Also, Denver has been diverting more and more runoff from the Rockies to the East instead of West.
HWR_14将近 3 年前
Plants don&#x27;t provide &quot;natural cooling&quot;. They naturally provide evaporator cooling. That is, they cool the surrounding area because they release water vapor. Drip irrigation is much better than other irrigation, but it doesn&#x27;t change that growing trees and vines in the desert is wasteful.
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tracerbulletx将近 3 年前
The entire state of Nevada is allocated 4% of the water from the Colorado. Almost every residential property, and recently the commercial ones as well, is xeriscaped with rock. Yeah there are a few golf courses and hotel fountains which do as much water recycling as they can and look out of place in the desert, but Las Vegas is not particularly significant to the South West&#x27;s water problems really.
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ianbicking将近 3 年前
Looking at all the parking lots, I can&#x27;t help but wonder if there isn&#x27;t a more appropriate form for this particular area?<p>In lots of places asphalt at least has the advantages of suppressing plants, making it easier to plow snow, avoiding any car fluids from seeping into the groundwater, keeping it from getting muddy in the rain, and so on. There&#x27;s still issues with washboarding, and there is at least a little rain, but it feels like you could skip a lot of this built landscape.<p>I wonder how much the asphalt is, ultimately, aesthetic. It says &quot;this is a built area&quot; as opposed to &quot;this is an empty lot&quot;.
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suzzer99将近 3 年前
Now do the Bellagio fountains that evaporate 12 million gallons of ground water every year. I can&#x27;t imagine that&#x27;s being replenished at a sustainable rate.
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lazyant将近 3 年前
&gt; Most of the water actually flows under the stones and isn’t exposed directly to the sun in order to reduce evaporation.<p>Can somebody confirm this? it&#x27;s not obvious to me that since the surface would be the same, that everything equal (average temperature of the water probably not?), the evaporation would be the less in this case vs normal stream.
iostream24将近 3 年前
This is great. Basic common sense, no nonsense.