Bjorn Lomborg Profile picture
Mar 5, 2023 9 tweets 7 min read Read on X
One of 12 best solutions for world's poorest:

Childhood vaccination

$1.7bn/yr ➡️

saves 523,000 lives/year

Pls retweet to support

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More childhood vaccinations (measles etc)

cost $1.7bn/year

save 523,000 more lives each year

Per dollar, it delivers 101x social benefits

Summary of this amazing solution in Daily Nation (top Kenya paper), one of 35+ papers across world

New research: copenhagenconsensus.com/publication/ha…
Child immunization one of 12 best solutions for world's poorest:

In 2022, vaccines avoid 3.8m deaths

With $1.7bn/yr more, we can save 4.4m by 2030

We save ½ million lives every year

Each dollar delivers astounding 101x social benefits

New research: copenhagenconsensus.com/publication/ha…
5 million children under 5 die each year

Vaccines one of the most effective ways to help

They can save additional ½ million lives every year

for just $1.7bn/year

Each dollar, rupee or shilling delivers astounding 101x social benefits

New research: copenhagenconsensus.com/publication/ha…
Here are previous best investments:

Agricultural R&D

$5.5bn/yr ➡️

133m fewer hungry and $184bn/yr

New research: copenhagenconsensus.com/publication/ha…

See more:
Background: The world has promised everything to everyone with UN's Sustainable Development Goals #SDGs

But we're not delivering

We'll be half a century late

How to fix?

If we can't do everything, let's do the smartest things first
The world has 169 priorities, from peace, climate change, hunger, disease, and education to more recycling

169 priorities are like having none

And we're failing

We've identified the world's 12 most effective policies

Here writing with Debroy, PM Modi's economic advisor
economictimes.indiatimes.com/opinion/et-com…

In total, I'm writing about 12 of the world's most effective solutions over the next three months in more than 35 papers around the world
Here is my introduction to the most effective policies — the ones that will deliver vast positive impact for the world at a very modest cost

This is from Indonesia, The Jakarta Times
thejakartapost.com/opinion/2023/0…

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More from @BjornLomborg

Oct 30
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
Sep 2
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
Jun 30
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
May 4
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
Apr 30
Two days ago, Spain lost 55% of its power, most from solar

Perception: Everyone wants to blame anything but renewables

Reality: With renewables, the grid gets vulnerable (missing inertia, mainly from fossil fuels) so we need more costly renewable management

So Reuters deceptively tells us, "don't blame renewables," blame "management of renewables"

reuters.com/business/energ…Image
"By continuously reducing inertia, Spain’s policymakers engineered a vulnerability."

"Spain’s electrical grid was operating with very little margin for error, a risky game that the Spanish government has been playing more aggressively each year since energy-transitionist ideologues took power two decades ago."

archive.ph/eonJRImage
Read 5 tweets
Jan 25
The myth that the green energy transition is inevitable and will make cheap electricity for everyone is one of the most dangerous self-delusions of the global elite

My piece for Sunday Telegraph

archive.ph/EufH0Image
Globally, fossil fuels supply 81% today (2022)

only marginally down from 81.2% in 2000

On current trends, fossil fuels are not on track to end in 2050
but in 4-9 centuries
iea.org/data-and-stati…Image
You are told that solar and wind are cheap

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

because solar and wind are worthless when not sunny and windy

iea.org/data-and-stati…

x.com/i/web/status/1… Image
Read 4 tweets

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