How Can Los Angeles Adapt to Coming Climate Change?

Climate change can’t alter the blue skies or access to the beach and mountains, but it will pose four tangible threats: The summers will grow hotter, the air will be smoggier, there will be more fires, and there will be much less water















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Engineering solutions to the challenges that Mother Nature poses are not always embraced. Consider putting fluoride in the water supply. This has helped to sharply reduce cavities and other tooth decay problems. Recently economic research has documented that people with more teeth earn higher wages. Differential access to fluoridated water during childhood offers a “natural experiment” for testing how this public health intervention affects long-term quality of life. One research team used adult wages as their key outcome measure and found that women who resided in communities with fluoridated water during childhood earn about 4 percent more than women who did not live in communities with fluoridated water.

Although this may not seem surprising to you, such research is necessary to help make the case that public health strategies such as putting fluoride in water improve our health and well-being. But controversy has arisen over this strategy. Some potentially valid concerns have arisen, such as that fluoride intake is not easily controlled and that children could be overdosed.  Other objections make less sense. In the 1950s, it was argued that water fluoridation was part of a communist plot.

Climate change will force Californians to have a serious policy discussion about water priorities. As water supplies decline, and if people reject engineering solutions such as the “toilet to the tap,” what is to be done?

Will California’s Farmers Bail Out the City Slickers?
California farmers offer one possible source of supply. It is well known that 80 percent of the state’s water goes to agriculture and that 40 percent of the state’s water goes to growing four crops: cotton, rice, alfalfa, and pasturage (irrigated grazing land). These four crops account for only 1 percent of the state’s annual income. Urbanites generate California’s wealth, but historical property rights allocations have granted the increasingly scarce water to farming interests.

An economics 101 student would say, “Let me get this right. Farmers have the property rights to this water and are growing low-profit crops such as alfalfa and strawberries while thirsty urbanites are willing to pay more than ten times as much for this same water that the farmers are using? Let the farmers sell their water to the urbanites and then California’s cities will suffer less from climate change.”

Unfortunately, many remember the “Theft of Owens Valley.” Although these events took place in the 1920s, farmers have long memories. If water sellers today believe that past farmers did not receive a good deal from the first great water transfers, this will discourage trade today in water transfers.

The Owens Valley case continues to generate wide academic and popular attention. Consider the movie Chinatown. This Oscar-winning film helped Jack Nicholson pay for his Lakers front-row court seat and to perpetuate the myth that corrupt LA stole its life-sustaining water supply from unsuspecting Owens Valley farmers. Although leading economic historians have reevaluated and rejected this version of what happened, the “fact” remains that in the past city slickers outfoxed the rural farmers in a lopsided trade that led to the urbanites’ being enriched at the rural area’s expense. To quote The Who, “We won’t be fooled again.”

Today’s farmers are worried that history will repeat itself as they are suckered by the “big city” sophisticates into a deal that takes their water at too low a price. Climate change will make California’s urbanites more desperate to find sources of water, and the farmers will have property rights to California’s scarce water. A farmer who seeks to maximize profits would diversify his or her portfolio of assets and substitute growing less water-intensive crops and selling surplus water to the thirsty urbanites at a high price. Such privately beneficial actions by the farmer will help Southern California’s cities adapt to climate change.



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  1. 1. Bobb 12:21 PM 9/3/10

    I really wanted to like this piece, but it relies too much on intellectual shortcuts. The anecdote about the writer's mother-in-law on page 7 is a prime example. The water agency is trying to cut water use by incentivizing saving, but the writer believes this is silly because his MIL got a check for cutting her water usage, when in reality she was overseas and hence her water use fell. Are you really using a single anecdote that relies on an outlying phenomenon (i.e., not everyone can afford to spend a whole month traveling in Italy) to dispute the generally accepted notion that financial incentives can influence human behavior? The same goes for example of how Candy Spelling's giant estate pays less per gallon of water used than the writer does. Is one rich person's anomalous water bill enough to toss out the entire idea of tiered rates? Finally, your view of L.A. is way too westside-centric. You should hang out in some other neighborhoods a bit. The fact that a handful of UCLA students won't venture downtown proves nothing. Oh, and you misspelled the mayor's name.

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  2. 2. notborninla 04:06 PM 9/3/10

    http://www.notenoughtowaste.org/notenoughtowaste/Headwaters.html

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  3. 3. notborninla 04:08 PM 9/3/10

    Some of your facts are not totally correct, we do get 15 inches of rain not 11 and not everybody wastes water, check out more facts about Securing LA water future here. http://www.notenoughtowaste.org/notenoughtowaste

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  4. 4. scepticalofsciam 11:56 PM 9/4/10

    Curious. So Cal is heading towards the coolest summer on record. July 8 saw the lowest maximum high in 132 years of record keeping in San Diego. Lowest record highs breaking decades old records have occurred continuously this summer on the California coast. Didn't we have record snows this winter back east? And where exactly are the hurricanes the ;ast four years now? Certainly makes on wonder how this stuff is measured.

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  5. 5. scepticalofsciam 12:00 AM 9/5/10

    BTW, everyone talks about how bad LA/OC is but nobody seems to be leaving, apparently even you. That's why the song say's 'We love it!'. After an awesome day today around the pool it should be obvious to the most effete Eastern snob.

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  6. 6. Beehom 11:49 AM 9/5/10

    Indeed, climate is an important factor for attracting people living in LA, but LA has many different characteristics from other region for its charm. It's really interesting that the author discusses the climate issue on an economic view.

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  7. 7. notslic 05:17 PM 9/5/10

    As one lucky enough to take my family and escape the cesspool of SoCal, I can't imagine that anyone still believes the false claims that LA is some sort or nirvana or desirable in any way. The traffic alone is reason enough to hate the place. I live 65 miles from the nearest freeway.

    Most of the article is about water. Typical LA attitude that the author thinks that water should be taken from farmers for the lawns of the city. What don't you understand about the fact that WE GROW YOUR FOOD!

    Now that LA is just Tijuana Norte, I'm very happy that I don't live in Mexifornia anymore.

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  8. 8. Sisko 10:38 PM 9/5/10

    What is the reasonable/fair method of calculating the appropriate use of energy/resources by nation states on planet earth??? Should it be based on the resources used per person or per square mile???

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  9. 9. Nlfalls in reply to shopa 05:28 PM 9/6/10

    How may we support you? Your invention is desperately needed.

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  10. 10. tulcak 01:26 AM 9/7/10

    "Climate change cant alter the blue skies or access to the beach and mountains, but it will pose four tangible threats: The summers will grow hotter, the air will be smoggier, there will be more fires, and there will be much less water."

    Ok, is it just me or how bi-polar is this statement? sure, whatever we do here won't affect the fact that there are stars overhead either.... WTF? worry, but, don't worry? at some point, this "writer" needs to take a stand and quit taking the middle road. its not all about profit. at some point, you have to take a stand - that is, if you believe in something.

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  11. 11. gone 04:58 AM 9/7/10

    the author is talking like a fool, you should pay more attention at how to exist in the earth longer, if you are all gone with the bad climate economy is zero, all things are 000000000

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  12. 12. Captain America 02:43 PM 9/7/10

    I take issue with a couple points. One is on the subway where you say it will have 200,000 riders a year. The current subway has 150,000 riders per day not per year, so basically you calculation is off by a factor of 365. That $1,000 taxi ride just went to $3.

    Also, you claim that the skies will become smoggier. As you correctly stated, air pollution has dropped dramatically in the last 30-40 years and continues to drop. With the advent of electric cars and more technological improvements this will likely continue, but you suddenly give a more doomsday scenario because of warmer weather. Also, warm weather is not necessarily a producer of smog. Los Angeles suffers from an inversion layer of cooler air below warmer air. If the cool air does not come in from the coast this inversion does not happen so warmer days are not necessarily the most smoggy. This is often true today as the warmest days are generally not the smoggiest inland necessarily.

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  13. 13. Jeff with a J 07:33 PM 9/7/10

    Hard to get past the first page of name-dropping and tourist advertising. Kahn and his wife must be up for the next Real Housewives of L.A. Who the hell would read his stupid bool?This guy is just putting lipstick on a pig and calling it beautiful.

    The real issue is...where do these giant metro areas like L.A. and Vegas get their water? The reality is that they steal it from others. By doing so they desire to create a serfdom where the lowly rural inhabitants only exist to serve their city-dwelling masters. The most valuable commodity is fresh water.

    The only way to stop the madness is to abandon the growth economy model and concentrate on a sustainable future. Mexifornia (nice one, notslic) is the present model for a failed state, with its $20 billion deficit and plan to again start handing out IOU's for the services it purchases. When it goes down the toilet, it will only end up where all the rest of its sewage does...3 miles out to sea.

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  14. 14. sefair 11:11 AM 9/8/10

    "The summers will grow hotter, the air will be smoggier, there will be more fires, and there will be much less water", Matthew Kahn is talking Global Warming. The evidence for GW has evaporated. LA has bigger problems than climate.

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  15. 15. jvk90210 in reply to notslic 04:33 PM 1/26/11

    When I arrived in SoCal 1972 from the NorthEast, I watched heat-infused sunsets, drank margueritas, ate chile rellenos, and thought I was in heaven (and picked up a BSEE). Having been to all 50 states and many countries, I still think SoCal is heaven. Please consider Shakespeare by the beach or opera at the Dorothy Chandler, cocktails at the Biltmore or dinner at the old train station. Take in the LA Marathon or volunteer at a soup kitchen. What's a little humidity? It's a very elastic and accepting social environment. And, very adaptable. Being rich is not how much you have but how little you need.

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  16. 16. geojellyroll 10:45 AM 12/13/11

    "Almost everyone in Los Angeles was not born here."

    Hint...the vast majority of the Hispanic kids are NOT ousiders. They were born in greater LA. As were Vietnamese. Chinese, etc.

    There are also outright twisted facts about precipitation, recent tremperatures, etc.

    Are there no editors at Scientific American to weed out fluffy nonsense articles full of errors?

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  17. 17. JJJones 01:38 PM 6/20/12

    To me, it's clear that LA is not going to "adapt" so much as how the rest of the world is going to need to change. Different technologies and the use of completely clean power generation (say fusion in the future) could in fact make it very viable
    We'll see
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