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Hannah Ritchie Newsletter
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19 September
18 September
16 September
13 September
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korrents.com
It is not rational to say AI is likely to end humanity in one's lifetime while completely winging safety measures.Their words
But you cannot say "yes this is likely to end humanity in your lifetime, and we're going to completely wing it." That is simply not rational.
12 September
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korrents.com
A more fragmented but media-savvy population will lead to more small-scale, meme-driven terrorism.Their words
One potential upshot of this: a more fragmented media environment but a much more media-aware population will lead to more small-scale, meme terrorism.
11 September
5 September
2 September
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Their words
If you suffer from amygdala hyperactivity that gives you one of the aforementioned psychiatric disorders, I think that not only should you be offered elective amygdalectomy, but your health insurance should be glad to pay for it (especially if done via ultramodern very safe radiosurgery) one time, rather than for a lifetime supply of more expensive, less effective talk therapies and medications.
Absurd Adventure And Amygdalectomy Advocacyastralcodexten.com
31 August
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Their words
Reservoirs are not automatically cheaper than desalination plants.
26 August
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Their words
I love this quote. I think it's Lenin. There are decades where nothing happens and weeks where decades happen. And we have seen decades of progress happen in the last nine months.
20 August
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Their words
All the evidence, both ancient and modern, points to a tiny non-African ancestry population between 50 and 60,000 years ago, a few thousand individuals at most
19 August
18 August
From one piece The UK needs to build more reservoirs 3 beliefs · hannahritchie.substack.com
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korrents.com
Britain has a systemic problem building large infrastructure projects, including reservoirsTheir words
I think Britain has a real problem with building almost anything, from train lines to houses, and reservoirs to energy infrastructure.
The UK needs to build more reservoirshannahritchie.substack.com
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Their words
If the UK is to survive water-starved summers in the future, it will need to build more reservoirs and plug holes in our existing pipelines at the same time.
The UK needs to build more reservoirshannahritchie.substack.com
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Their words
There is also a clear rationale for why privatisation would lead to a drought in reservoir-building.
The UK needs to build more reservoirshannahritchie.substack.com
17 August
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Their words
If I just take the general population on average it's the case that those people who would have a diagnosis of autism or who score higher on autistic traits even if they don't have a diagnosis look less at faces.
15 August
6 August
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Their words
Obligers, the most common Tendency, tend to work well alongside every other Tendency, which makes them worth having on any team.
29 July
23 July
14 July
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Likedaffiliate linkrcmnd.app
Money and MeTheir words
In simple, crystalline prose, Clements shares a lifetime of wisdom on using money to buy happiness, counteracting the behavioral quirks that bedevil our financial decisions, and making family and friends an integral part of our wealth.
11 July
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Their words
Population-level studies will keep struggling to prove that short sleep shortens life, because they are structurally unable to separate cause from symptom—and the genetic tools meant to overcome this limitation inherit a different fatal flaw.
30 June
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Their words
To meet the global population’s protein needs through factory-produced bacterial protein in 2024 would have used more than the total global electricity generated using renewable (hydro, photovoltaic and wind) energy
23 May
19 May
8 May
From one piece David Reich – Bronze Age shock, the Neanderthal puzzle, & the sudden spread of farming 5 beliefs, in the piece's order there
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Their words
So we just could not see a way this could happen by chance and once we saw that we really felt quite convinced that this was a real signal and that really somehow there has been natural selection to increase the genetic changes that today manifest themselves as more years of school at predicting more years of schooling.
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Their words
So we're talking about strong measurable selection coefficients on the order of half a percent or more in this study and all of those are going to work in small populations or large populations. It's not going to be affected by the population size.
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Their words
but it is the tracer dye, right? Like it tracks into European languages and important aspects of Indo-European culture are coming through Yamnaya.
+ 2 more
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Their words
So for complex traits, ones underpinned by many mutations, all the variation already exists to move the population to a different adaptive set point that's optimal in the environment which it's in.
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Their words
Uh and 98% of it is other factors, especially genetic drift. So it's overwhelmingly migrations and population structure causing fluctuations in frequency.
12 March
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Their words
But if you know anything about my obsession with selection bias, you can predict the outcome: when you expand access from a population that excludes more students to one that excludes fewer, you’re very likely to see declining performance.
14 January
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Their words
The main reasons for males suffering from a higher burden of global TB cases, compared to females, may be in large part due to population-scale factors, such as employment type, the quantity and type of social contacts they make, and their health-seeking behaviours (e.g. differences in diagnostic and treatment delays between genders).
21 December 2025
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Their words
It had the best opening sentence of any nonfiction book I read this year: "In 2012, 146 million children were born. That was more than in any prior year. It was also more than in any year since. Millions fewer will be born this year. The year 2012 may well turn out to be the year in which the most humans were ever born—ever as in ever for as long as humanity exists." Such a simple and obvious fact but I had not known it before. I had to keep reading.
8 December 2025
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Their words
The only highly populated industrial country unable to trivially meet its electricity and synthetic fuel needs with solar alone is the United Kingdom, due primarily to a high population density and high latitude. The Nordic and Baltic countries are tiny by comparison. Among other problems, the UK needs to decide if it wants the future where energy is cheap and it is rich, or the future where energy is expensive and it is poor. If the former, it is time to get serious about large scale deployment of wind power, using home-grown vertically integrated technology at prices as low as $10/MWh.
15 November 2025
14 October 2025
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Their words
I don’t see population collapse or lack of workers as the central policy problem: the central policy problem is human happiness, human flourishing, and the freedom to live life well.
Falling Fertility Is Not About Opportunity Costlymanstone.substack.com
8 October 2025
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Recommendsaffiliate linkrcmnd.app
RoonTheir words
Roon is software to control your home stereo. I have a lifetime subscription, and the link gets you thirty days for free. If you love music, you'll get a lot out of this.
28 September 2025
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korrents.com
Academic talent is normally distributed, so some students failing is inevitable rather than anybody's fault.Their words
Academic talent is normally distributed throughout the population, and so some degree of failure is literally inevitable.
There Are No Miracles in Educationfreddiedeboer.substack.com
28 May 2025
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Their words
Drug offenders never accounted for a particularly large fraction of the U.S. prison population, peaking at about 22 percent of state prisoners in 1990.
What Was The War on Drugs? Part Vthecausalfallacy.substack.com
24 May 2025
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Their words
But Chamberlain was prime minister in a democracy, a parliamentary democracy, where 92% of the population were against going to war in 1938. There was not a single democratic leader in the world that would go against the wishes of 92% of the population.
11 April 2025
22 March 2025
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Their words
I couldn't let myself be angry or consumed by that kind of stuff because hate is so sticky, it sticks for a lifetime. And there really is only one cure for hate, which is forgiveness. I just don't think you can get rid of it without that.
19 February 2025
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Their words
Despite misleading statements by mainstream education economists, college attendance in particular is not a good career investment for most of the population.
7 February 2025
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Recommendsrcmnd.app
MoleskineTheir words
Use a sturdy journal designed to last a lifetime, rather than a floppy spiral notebook. A great brand with a cult following among travel writers is Moleskine.
21 January 2025
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Their words
African states formed where it was rational to do so, in places like the Ethiopian highlands where population density was high and the disease burden was relatively low.
1 November 2024
From one piece Why is Fertility Collapsing, Globally? 3 beliefs, in the piece's order there
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Their words
For rich countries to maintain their working-age population ratios in 2050 through permanent migration (where each worker brings one dependent), Lant Pritchett estimates they would need to become 40-50% foreign-born.
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korrents.com
Japan's decades of stagnation were caused by its shrinking working-age population rather than by its monetary policy.Their words
The key difference wasn't policy - it was demographics. Japan's working-age population is shrinking.
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korrents.com
As every population ages, countries will have to compete for migrants rather than choose freely among them.Their words
One more word of caution: the world is a closed and shrinking box. As all populations age, competition for talent will only intensify.
22 June 2024
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korrents.com
Britain has a systemic problem building large infrastructure projects, including reservoirsTheir words
It’s turned entire countries, like the United Kingdom, incapable of building more than about one line per generation.
29 May 2024
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Their words
But understand that it’s ultimately a moral and political argument, not an empirical question of the ideal population or the exact level of housing demand in Santa Monica.
1 April 2024
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Their words
If your plans for open-source sustainability or security do not align first and foremost with this population it is not going to achieve anything.
19 December 2023
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Lovedaffiliate linkrcmnd.app
The Half Known Life: In Search of ParadiseTheir words
With soulful curiosity channeled in his ever-lyrical prose, Pico Iyer chronicles a lifetime of pilgrimages to some of Earth's greatest shrines to that longing in The Half Known Life: In Search of Paradise
14 December 2023
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Their words
I would love to see a trillion humans living in the solar system. If we had a trillion humans, we would have, at any given time, 1,000 Mozarts and 1,000 Einsteins. That our solar system would be full of life and intelligence and energy.
29 November 2023
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korrents.com
Without immigrants Spain’s labour force falls from 22.6 to 15.7 million by 2050, far too few to run its economy.Their words
In the absence of immigrants, between 2020 and 2050 Spain’s labor force (its active population) will drop from 22.6 to 15.7 million people. You’re not going to fill all the jobs needed in a modern and sophisticated economy like that of Spain’s with 15.7 million people.
17 November 2023
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korrents.com
A state's power rests on two material foundations only: the size of its population and its wealth.Their words
The two key building blocks of power are population size and wealth. You want to have a lot of people and you want to be really wealthy.
9 November 2023
30 October 2023
4 October 2023
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korrents.com
A third of humanity already cannot afford a healthy diet, which is why food has to get cheaper rather than dearer.Their words
Using this definition, 3 billion people – over one-third of the global population – cannot afford a healthy diet.
26 June 2023
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korrents.com
Half the population in rich countries is not articulate enough in writing to use prompt-driven AI well.Their words
For sure, half the population is insufficiently articulate in writing to use ChatGPT well.
11 October 2022
From one piece Review of DeLong's "Slouching Towards Utopia" 2 beliefs, in the piece's order there
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Their words
It was an acceleration in productivity combined with a decline in population growth that put us on a slow trudge towards utopia.
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Their words
Prior to this inflection point, productivity growth had increased before, but every time had induced a response of higher population growth rates, eroding any gains in per-person living standards.
19 August 2022
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Their words
Consequently if everything else about our understanding of Sparta is made less exceptional, is made more like a normal Greek polis, we are still stuck with this absolutely wildly high percentage of enslaved persons in this society.
11 May 2022
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Their words
There is essentially zero correlation - the metros with the largest rent increases had added population / added housing ratios no different than metros with smaller rent increases.
2 March 2022
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Their words
That's why I only use plain text files. They are the most reliable, flexible, and long-lasting option.
1 February 2021
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Their words
This suggests that overfeeding had caused their body fat regulatory system to durably accept a higher “setpoint”.
20 October 2020
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What is a korrent?
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