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Bjorn Lomborg Profile picture
@BjornLomborg
Aug 9, 2020 • 6 tweets • 3 min read • Read on X
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Kære Uffe, tak for din ærligt mente bekymring. Jeg er lige igang med vores projekt for at sætte bedre prioriteringer i Ghana — håber jeg kan nå det i vores kaffepause
graphic.com.gh/business/busin… Image
Jeg forstår godt, at du tænker BNP er bare et abstrakt mål, men grunden til at jeg (og mange andre) bruger det, er fordi det er en af de bedste og simpleste mål for menneskelig velfærd (livslængde, skole, livstilfredshed etc)
sciencedirect.com/science/articl… Image
Og BNP er ikke et nul-sumspil. Over de sidste 200 år er verden gået fra at have 90%+ fattige til <10% fattige. Det er en fantastisk udvikling.

Hvis det var et nulsumspil så ville det bare være et spørgsmål om hvilke 90%, der skulle være fattige
ourworldindata.org/grapher/world-… Image
Du mener, at man skal vælge standpunkt efter hvem, der også har det standpunkt. Meget postmoderne

Jeg vælger at vælge standpunkt efter, hvad der faktisk vil gøre mest godt for verden

Lad mig vise dig en enkelt pointe fra mit nye videnskabelige paper (og bog)
Du bekymrer om klima of Afrika. Godt!

Se FNs egne scenarier. Du foretrækker grøn udvikling

Mindre opvarmning og færre klimaproblemer

Men langt flere fattige, langt mindre total velfærd for fremtiden

sciencedirect.com/science/articl… Image
Dette er også pointen fra verdens eneste klima-nobelpristager:

Klima har omkostninger, men klima-politik har *også* omkostninger. Vi skal betale begge.

At vælge lav temp, fordi det føles bedre, men koster $250 trillioner mere er moralsk problematisk Image

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More from @BjornLomborg

Bjorn Lomborg Profile picture
May 12
Dementia risk down by two-thirds over past 40 years

In 1984, nearly 1 in 3 people in their late 80s had dementia

By 2024, it’s down to just 1 in 10

Data for US, but similar in Sweden, the Netherlands, the UK, and France

jamanetwork.com/journals/jama/…, free: pmc.ncbi.nlm.nih.gov/articles/PMC12…Image
Dementia risk down by two-thirds over past 40 years

Possible explanations, smoking⬇️ and education⬆️, along with better nutrition and better management of hypertension, cholesterol, and depression

jamanetwork.com/journals/jama/…, free: pmc.ncbi.nlm.nih.gov/articles/PMC12…Image
Dementia risk down by two-thirds over past 40 years

— with no slowdown at the end of the 40-year period

So when you hear that the future will bring a tsunami of dementia because there will be many more old people, it ignores that each person will likely be less at-risk

(A bit like the 1970s worried about a tsunami of cancer, but age-adjusted death risks are down)

jamanetwork.com/journals/jama/…, free: pmc.ncbi.nlm.nih.gov/articles/PMC12…Image
Read 4 tweets
Bjorn Lomborg Profile picture
May 2
Textbook climate deception:

Lancet report blames climate for tens of thousands of European heat deaths

But hides that increase almost entirely due to an aging population

And ignores cold deaths, which are down much, much more

Refs and documentation in 🧵Image
Textbook climate deception:

Lancet report blames climate for tens of thousands of European heat deaths

But the increase is almost entirely due to an aging population

thelancet.com/journals/lanpu… ihmeuw.org/7jat, population.un.org/wppImage
Textbook climate deception:

Lancet report blames climate for 39,000 European heat deaths

But increase almost entirely due to an aging population

Real scientists show you the age-adjusted risk

(unlike scare-mongering campaigners)

thelancet.com/journals/lanpu…, ihmeuw.org/7jagImage
Read 7 tweets
Bjorn Lomborg Profile picture
Oct 30, 2025
Climate professor Michael Mann claims “There is no greater threat to developing nations than the climate crisis”

His claim is wrong in many ways

1) Intuitively wrong. Poor parents across the world worry about hunger, poverty, disease, insecurity, bad education. When your kid could die tonight from an easily curable disease, your priority is not a 0.1°C temperature reduction in a century

Mann quote: edition.cnn.com/2025/10/28/bus…Image
WRONG: Climate professor Michael Mann claims “There is no greater threat to developing nations than the climate crisis”

2) Leaders in low- and middle-income countries find education, employment, peace, and health are at the top of their development priorities, with climate at 12th of 16 issues

docs.aiddata.org/ad4/pdfs/Liste…Image
WRONG: Climate professor Michael Mann claims “There is no greater threat to developing nations than the climate crisis”

3) World Bank’s own surveys show that climate is not high on most countries’ agenda

On average, less than 6% of countries have climate in their top 3 priorities
Image
Read 5 tweets
Bjorn Lomborg Profile picture
Sep 2, 2025
The world is burning less, not more

That's contrary to the climate narrative

2025 has seen dramatically less fire in Africa, the Americas, Asia, and Europe

On this trajectory, 2025 could become the lowest-burn year in the 21st century

Did you see this reported anywhere?

Data: from satellites circling the planet 24/7 (MODIS), modis.gsfc.nasa.gov/data/dataprod/…

2025 data from Jan 1-Sept 2 shows 80% as much burned area as normally for same period 2012-24 from Global Wildfire Information System, gwis.jrc.ec.europa.eu/apps/gwis.stat…

Light blue data shows extrapolation on current trajectory to full 2025Image
In 2025, the world is burning less, not more

That's contrary to the climate narrative

2025 has seen extraordinarily little fire in Africa, much less than average, and even less than the minimum, from 2012-24

Did you see this reported anywhere?

Data from Global Wildfire Information System gwis.jrc.ec.europa.eu/apps/gwis.stat…Image
In 2025, the world is burning less, not more

That's contrary to the climate narrative

2025 has seen extraordinarily little fire in the Americas, much less than average, and even less than the minimum, from 2012-24

Did you see this reported anywhere?

Data from Global Wildfire Information System gwis.jrc.ec.europa.eu/apps/gwis.stat…Image
Read 7 tweets
Bjorn Lomborg Profile picture
Jun 30, 2025
Awful climate scare

New Nature study claims climate means less food, “like everyone giving up breakfast."

Media even spins "mass starvation"

No, study's small print reveals ever more food, tempered slightly by climate

+ many other issues

The scare is the point

🧵Image
New study claims climate leads to much less food

Reality? "Reduction" is merely a deviation from increasing baseline yields

So, not less food overall, but slightly less of much more food

Still, the researchers tell the "less food" story to the public

nature.com/articles/s4158…Image
New study claims climate means food loss like giving up breakfast

Only true IF agricultural innovation halts today

Preposterous to assume progress stops — global yields up 8% since 2015, 1%+ annually since 1961

The researchers don't believe it, but they tell journalists Image
Read 9 tweets
Bjorn Lomborg Profile picture
May 4, 2025
The cheap green lie

You are told that solar and wind are cheap

But cramming in more solar and wind just makes electricity more and more costly

because solar and wind are worthless when not sunny and windy

iea.org/data-and-stati…Image
The cheap green lie

You are told that solar and wind are cheap

But cramming in more solar and wind makes power more and more costly

because solar and wind are worthless when not sunny and windy

True for both 2023 and 2019, before Covid and Ukraine

iea.org/data-and-stati…Image
There are no high-solar&wind, low-cost nations

You are told that solar and wind are cheap

But cramming in more solar and wind just makes electricity more and more costly

because solar and wind are worthless when not sunny and windy

iea.org/data-and-stati…Image
Read 4 tweets

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