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Comment on Greening the world’s deserts by naq

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Michael, tell him it’s NOT, the Sun.


Comment on Greening the world’s deserts by naq

Comment on Greening the world’s deserts by PA

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“Global warming will only compound the severity of water scarcity”

http://www.csiro.au/Portals/Media/Deserts-greening-from-rising-CO2.aspx

Well, CO2 is making the deserts green and they aren’t known for an abundance of water.

More CO2 should lead to a reduction in irrigation, or more growth with the same water, and either result cuts water consumption.

It is much more likely (since most areas have more water than a desert) that more CO2 is a solution to water scarcity.

Comment on Greening the world’s deserts by handjive

Comment on Greening the world’s deserts by jim2

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Even though this isn’t the most efficient solar power design, it also can produce fresh water.
From the article:

The solar updraft tower (SUT) is a renewable-energy power plant for generating electricity from solar power. Sunshine heats the air beneath a very wide greenhouse-like roofed collector structure surrounding the central base of a very tall chimney tower. The resulting convection causes a hot air updraft in the tower by the chimney effect. This airflow drives wind turbines placed in the chimney updraft or around the chimney base to produce electricity. Plans for scaled-up versions of demonstration models will allow significant power generation, and may allow development of other applications, such as water extraction or distillation, and agriculture or horticulture.

As a solar chimney power plant (SCPP) proposal for electrical power generation, commercial investment is discouraged by the high initial cost of building a very large novel structure, and by the risk of investment in a feasible but unproven application of even proven component technology for long-term returns on investment—especially when compared to the proven and demonstrated greater short-term returns on lesser investment in coal-fired or nuclear power plants[citation needed]. Likewise, the benefits of ‘clean’ or solar power technologies are shared, and the widely shared harmful pollution of existing power generation technologies is not applied as a cost for private commercial investment. This is a well-described economic trade-off between private benefit and shared cost, versus shared benefit and private cost.

https://en.wikipedia.org/wiki/Solar_updraft_tower

Comment on Greening the world’s deserts by jim2

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Rob, the ME has plenty of oil money. They can afford expensive solar water and power. See, the nation-state concept works. They can make this decision for their country, and spend their money on it. Works for me.

Comment on JC at the National Press Club by nottawa rafter

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Michael

So let me try to interpret your reply. You don’t know. Thus I could posit that it was increasing at the same rate thru the 1800s to 1950 and you could not refute it. Glad that has been established.

Comment on JC at the National Press Club by willard (@nevaudit)

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Must be a paradigm thing.

I just noticed that this concept by C. West Churchman. A very interesting guy.

Seems that this approach excludes pure authority, pure competition, and pure collaboration.

Lazarus talks of structuring the implementation process to diminish the influence of short-term interests likely to be influential.

The concept might deserve due diligence, after all.

But socialism, of course.


Comment on How to criticize with kindness by bentabou

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Hansen’s extremely manipulative in the TED talk you provide. I’m not so keen on his invoking “because grandchildren”. We have child labor laws, so let’s let the adults due the adult work of speaking only for themselves, because, y’know, grandchildren! I’m also pretty unmoved by his relating energy balance in terms of Hiroshima bombs; why not equate the energy balance to some number of puppies being thrown off the World Trade Center by terrorists? And then you have to wade through tiresome denier insults, and imputing a desire to confuse on the part of those who think differently, and overstating his knowledge to say our future is “equivalent” to “a giant asteroid on a direct collision course with Earth,” which posits no other possibility than utter annihilation.

Hansen’s way is simply not the plain speech, and shows none of the respect for the light of others, of the Quaker traditions I understand and respect. I’m really not sure how these thoughts connect for you, FOMD, or how you can be drawn to Hanson and to Quaker traditions at the same time.

Comment on JC at the National Press Club by Tonyb

Comment on Greening the world’s deserts by mosomoso

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Very interesting, but I’m a lover of potty alternative ideas. I’ve learned to moderate the urges…but if I had global financial bodies with other people’s money and a cheer-squad media encouraging me, it could get grim.

Even solar and wind power are great in their proper roles, and may be great in new roles. But what a nightmare they have been when pushed as mainstream “solutions” to sate the fetishism and meet the political aspirations of the New Class.

But, hey, it all sounds interesting, especially the bit where lots more people get to eat better and make money. Love money. Love food even more.

Comment on Greening the world’s deserts by Tonyb

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Vastly increased populations will compound water scarcity but mention of that only seems to irritate people who consider the word Malthusian to be a dirty one
Tonyb

Comment on JC at the National Press Club by naq

Comment on Fraudulent(?) hockey stick by Beta Blocker

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Sorry Phil, but immediate post-war surveys of the German’s nuclear program in 1945 revealed they were nowhere close to acquiring the industrial capabilities and the detailed knowledge of chemical separation technologies needed to build a nuclear weapon.

Comment on JC at the National Press Club by mosomoso

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Tony, there have been 457 extreme events since breakfast. Since it’s difficult to define breakfast and everyone has it at a different time, nobody has been able to disprove my claim. Whoops, we just had another 32 extreme events as I was typing this.


Comment on Greening the world’s deserts by Nick Stokes (@nstokesvic)

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“Salt water based agriculture/aquaculture will change the global landscape”

Sure will. So you’re pumping gigatons of salt onto dry land. Maybe something will grow for a while. What happens to the salt?

Comment on JC at the National Press Club by phatboy

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Joseph, kindly explain how a reduced energy flux, on average, leads to more extreme events, on average.

Comment on JC at the National Press Club by physicistdave

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kaushik1234 wrote to me:
>I think your general point of science publishing within the last few decades are pretty relevant, but surely if most of the papers are trash, some are not and you should ‘waste’ time reading a bit at least.

Oh, you misunderstood. Of course, my advisor was not telling me to ignore everyone else’s work! He was just warning me not to systematically read through the journals.

I found from experience that he was indeed correct. For example, I found one paper in Physical Review Letters, the premier US physics journal, which claimed to prove a breakthrough result but in fact made a trivial algebra error (dividing by a a term that could be proved equal to zero). I naively contacted both the editors and authors about it. No one cared.

The editorial process had completely disintegrated over three decades ago. Even the premier journals had become bad jokes.

Which does not mean no one did good work – but you had to be very selective in what you took seriously.

It has not improved since (consider, e.g., the “landscape scenario”).

Dave

Comment on Greening the world’s deserts by Fernando Leanme

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If they cut a channel into a desert to feed seawater inland they’ll have to make it very deep. This means the approach is only viable near the coast. A better approach may be to build a shallow salt water polder with a flushing mechanism to allow the tides to keep salinity from increasing to excessive levels.

The Middle East and North Africa populations can benefit from better family planning. Their oil will run out and they will collapse as it is. But those high population numbers are completely unsustainable. Desalination in such a setting is like giving aspirin to a person suffering from stomach ulcers.

Comment on Greening the world’s deserts by Dan

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Humans have been around for a long time so unless a new technology is enabling salt water farming has major issues. Not sure what but I bet is something like salt accumulation due to evaporation.

My daughter did an science project where she titrated varicose concentrations of salt water into radish seeds. IIRC radishes grew fine with consignations less than ½ sea water.

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