Dr Bjorn Lomborg20 April 2023

Climate Alarmists Are Getting It All Wrong - Dr Bjorn Lomborg - #617

0Frameworks

10Insights

Insights & moments

The myth-busts, hot takes, explainers, and tools worth keeping.

Myth Buster· 2

Myth Buster02:00

Why Climate Change Is Not an Existential Risk

Dr. Bjorn Lomborg explains that while climate change is a serious problem, it does not qualify as an existential risk — a permanent, unrecoverable collapse of human civilization. Unlike threats like unaligned superintelligent AI or engineered pandemics, climate change, even with a few degrees of warming, won't eradicate humanity. The UN and IPCC do not claim it will end civilization, yet public perception, fueled by media, treats it as such.

Existential risk means permanent collapse — climate change doesn’t meet this threshold.
Global warming will make us slightly less rich, not destroy civilization.
Media and activists exaggerate climate change as an extinction-level threat.
Toby Ord estimates climate’s existential risk at 1 in 10,000 over 100 years.

“The idea that a few degrees of temperature would eradicate everything is way outside what anyone is really telling us.”
Bjorn Lomborg · 02:30

#climate-change#existential-risk#media-perception#rationality

Myth Buster43:30

Climate Policies Return Just 3 Cents per Dollar

Lomborg critiques current climate policies, noting that the EU’s 2020 climate policy returned only about 3 cents in climate damage avoided per dollar spent. Most green policies are inefficient because they prioritize symbolic actions like solar and wind over cheaper, more effective solutions like gas or R&D.

EU climate policy returned ~3 cents per dollar spent.
Most climate policies deliver less than $1 in benefit per dollar.
Politicians avoid effective solutions like gas or nuclear due to ideology.
Symbolic policies dominate over cost-effective ones.

“Every dollar spent avoids about three cents of climate damage. That’s not a good deal.”
Bjorn Lomborg · 43:45

#climate-policy#cost-effectiveness#energy#economics

Hot Take· 1

Hot Take57:00

Net Zero by 2050 Is Bonkers

Lomborg calls net-zero-by-2050 targets 'absolutely bonkers' due to lack of technology and astronomical costs. For the US, it would cost $5,000+ per person annually; for India, it would consume 9% of GDP. Even if achieved, it would only reduce warming by 0.5°C — making it ineffective and unrealistic.

Net zero by 2050 lacks necessary technology and is prohibitively expensive.
US cost: $5,000+ per person per year; India: 9% of GDP annually.
Would reduce warming by only 0.5°C.
Rich countries going net zero won’t fix the problem — emissions will rise in China, India, Africa.

“Net zero by 2050 is absolutely bonkers. We don’t have the technology, and it would cost more than 9% of India’s GDP every year.”
Bjorn Lomborg · 57:30

#net-zero#climate-policy#economic-cost#realism

Explainer· 2

Explainer37:00

Cold Kills Nine Times More Than Heat

Lomborg cites a Lancet study showing that cold temperatures cause far more deaths globally than heat — about 4.5 million from cold versus half a million from heat annually. This is because cold constricts blood vessels, increasing blood pressure and risk of stroke or heart attack, especially among the elderly and poor who can't afford adequate heating.

Cold causes 9 times more deaths than heat globally.
Cold constricts blood vessels, raising blood pressure and stroke risk.
Heat deaths are more visible (e.g., heatwaves), but cold deaths are more numerous and spread out.
Energy access is critical to reducing cold-related mortality.

“Cold kills 4.5 million people a year — heat kills half a million. That’s nine times more.”
Bjorn Lomborg · 37:15

#mortality#temperature-deaths#energy-access#public-health

Explainer34:30

Tuberculosis: A Billion Lives Lost, Still Ignored

Lomborg points out that tuberculosis has killed about a billion people over the last 200 years and remains the world’s leading infectious disease killer. Despite known solutions — medication, stigma reduction, and diagnosis — only half of cases are identified. A $5 billion annual investment could save 600,000 lives yearly, with a 46:1 return on investment.

TB killed a billion people in 200 years; still the top infectious killer.
Only 6 million of 11 million annual cases are diagnosed.
Treatment is effective but requires 6-month adherence.
Cost: $5 billion/year; benefit: 46x return in social good.

“Tuberculosis has killed a billion people over the last 200 years. We fixed it in the rich world and thought it was gone — it’s…”
Bjorn Lomborg · 35:00

#tuberculosis#global-health#infectious-disease#cost-effectiveness

Story· 1

Story00:30

Greta Thunberg’s Deleted Doomsday Tweet

Lomborg recounts how Greta Thunberg once tweeted that climate change would wipe out humanity in five years — a claim she later deleted. He frames this as a symptom of how media and activists have amplified climate fear beyond scientific consensus, leading well-intentioned people to believe in an imminent apocalypse that isn’t supported by evidence.

Greta Thunberg claimed climate change would end humanity in five years.
She deleted the tweet, but the fear it reflects remains widespread.
Media narratives often portray climate change as civilization-ending.
This misrepresents the actual IPCC and UN climate assessments.

“Greta Thunberg is doing what most rational people should be doing — listening to what the media is telling us.”
Bjorn Lomborg · 00:45

#greta-thunberg#media-hysteria#climate-fear#public-perception

Tool· 3

Tool17:30

One Hour of Tablet Learning = Three Years of School

Lomborg highlights a cost-effective education intervention: giving students in developing countries one hour per day with a shared tablet. Software adapts to each child’s level, resulting in three years of learning gains in one year. At $30 per child, this delivers a 60:1 return on investment by improving long-term productivity and reducing poverty.

80% of 10-year-olds in developing countries can’t read a simple sentence.
One hour daily with adaptive tablet software triples learning gains.
Cost: ~$30 per child; benefits: $600 billion globally for $10 billion spent.
Solution addresses the 'learning crisis' in global education.

“That tablet one hour a day can teach you so much that by the end of the year, you’ll have learned three years of school…”
Bjorn Lomborg · 18:00

#education#edtech#global-development#cost-effectiveness

Tool25:00

Simple Checklist Saves 1.4 Million Lives Annually

Lomborg discusses the WHO’s 'Bee Bonk' (Basic Emergency Obstetric and Newborn Care) — a simple checklist including clean water, disinfectants, and a $60 bag-mask to help newborns breathe. Implementing this in low-income countries could save 1.4 million lives yearly at a cost of $5 billion, delivering $87 in social good per dollar spent.

300,000 mothers and 2.3 million newborns die annually from preventable causes.
A $60 bag-mask can save 25 babies over 2–3 years.
Simple hygiene and emergency care could prevent most deaths.
Cost-effective: $87 return per dollar invested.

“This little bag costs sixty dollars and can save 25 kids over two or three years. Why don’t we have this?”
Bjorn Lomborg · 27:00

#maternal-health#newborn-survival#global-health#cost-benefit

Tool45:00

Green Energy R&D: Best Climate Investment

Lomborg’s research with 50 top climate economists found that investing in green energy R&D delivers the highest return in climate policy — $11 in social good per dollar spent. Breakthroughs that make clean energy cheaper than fossil fuels would lead to global adoption without mandates or summits.

Green energy R&D returns $11 in social good per dollar spent.
Goal: Make clean energy cheaper than fossil fuels.
Innovation, not mandates, drove past environmental wins (e.g., whales, Green Revolution).
China and India will adopt clean energy only if it’s cheaper.

“Every dollar spent on green energy R&D will do eleven dollars of social good.”
Bjorn Lomborg · 52:00

#climate-innovation#energy-rd#cost-benefit#technology

Takeaway· 1

Takeaway53:30

35 Billion to Save 4.2 Million Lives Annually

Lomborg proposes spending $35 billion annually on 12 highly cost-effective solutions — like education, maternal health, and TB treatment — that could save 4.2 million lives yearly and make the poor half of the world $1.1 trillion richer. This is 'couch money' compared to global spending on cosmetics or climate policies.

12 solutions cost $35 billion/year — 'couch money' globally.
Would save 4.2 million lives annually.
Would make poor half of world $1.1 trillion richer.
Includes education, maternal health, TB, nutrition, and more.

“35 billion dollars is basically couch money. We spend three times as much on cosmetics every year.”
Bjorn Lomborg · 53:45

#global-development#cost-effectiveness#poverty#policy