Michael Mann falsely claims climate kills more people than Covid

When exposed, he doubles down and claims a Bloomberg article w/5 million deaths

Except, that's 0.5m heat deaths and 4.5m cold deaths, with cold⬇️ more than heat⬆️

Pathetic

🧵
Originally, Michael Mann falsely claims

wildfires, droughts, floods, heatwaves, and coastal inundation caused by climate

kill more people than Covid19

No: 2020-21 such climate deaths total 21,500
2020-21 Covid total 18,100,000

Covid 𝟴𝟰𝟬𝘅 bigger

When exposed, he claims WHO says 250K climate deaths

But
1) not from wildfires, droughts etc, as he claimed (malaria, dengue etc)

2) 250,000 not larger than 18,100,000

3) laughably suggests that 𝗲𝘃𝗲𝗻𝘁𝘂𝗮𝗹𝗹𝘆 larger (yes, after 72 years)

After more googling Mann finds confirmatory news story

Only: study shows 4.5m cold+0.5m heat deaths

1) Bloomberg headline wrong: Not from changing climate, but from cold+warm 𝘄𝗲𝗮𝘁𝗵𝗲𝗿
2) Study shows higher temperature→𝗳𝗲𝘄𝗲𝗿 deaths

Oops

Here is the study, it finds that from 2000-19 global temp rise led to 116K more heat deaths, but 283K fewer cold deaths, so overall 𝗳𝗲𝘄𝗲𝗿 deaths

So, maybe not the point Mann thought he was making...

thelancet.com/journals/lanpl…
But pesky facts don't get in the way of intrepid professor Mann

Ready to call anyone disagreeing 'deniers' and double down on false claims

Recap:
Originally 840x wrong

Then shifted to just 72x wrong

Now use wrong news article to claim he's right

Pointing to WHO is an entirely different set of deaths, from malnutrition and malaria

And remember, WHO data doesn't show the world dying more, but dying less and less 𝘀𝗹𝗶𝗴𝗵𝘁𝗹𝘆 𝘀𝗹𝗼𝘄𝗲𝗿

See here:
and
And then when Mann googles terrible Bloomberg article claiming 5 million deaths from climate

He ignores:

1) 5 million deaths from 𝘄𝗲𝗮𝘁𝗵𝗲𝗿
2) mostly from 𝗰𝗼𝗹𝗱
3) total deaths 𝗱𝗲𝗰𝗹𝗶𝗻𝗶𝗻𝗴

As even 2nd author of Lancet study says

scidev.net/asia-pacific/n…

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More from @BjornLomborg

26 Nov
It is depressing how insistent WashPost is in describing climate as undermining everything

They tell us how heat is "stressing" wheat

— but conveniently forget to tell us that wheat production in 2021 once again broke all records
Global wheat production is larger than ever before

And this, while global wheat area has declined slightly since 1980s

apps.fas.usda.gov/psdonline/app/…
Indeed, global cereal production is setting records for 2021, but why report facts when you can scare people instead?

fao.org/worldfoodsitua…
Read 5 tweets
19 Nov
China reduced rural poverty from 96% to 0.6% in just 39 years

From 1980-2019, it lifted 750m people out of poverty

How? Through high, sustained economic growth, making average Chinese 24x richer data.worldbank.org/indicator/NY.G…

osf.io/preprints/soca… Image
Growth reduces poverty, more inequality increases it

China is not exceptional at turning growth into poverty reduction, but exceptional at high growth for a long time

Graph shows:

per person growth rate (horizontal)
% point reduction in poverty per % point growth (vertical) Image
China accounts for three-quarters of absolute poverty reduction in the world

We should work for more, high, and sustained economic growth per person everywhere else

osf.io/preprints/soca… Image
Read 4 tweets
3 Nov
Climate change is not a meteor hurtling toward Earth to destroy humanity.

"The first step to rational solutions is to push back on the panic and recognize that climate change does not threaten human existence."

I've been interviewed for Washington Post:

washingtonpost.com/opinions/2021/…
Here are the statistics for fewer climate-related deaths
Here is the UN's 2.6% loss of GDP for no climate policy
Read 4 tweets
30 Oct
Kids and adults alike believe the world is going down in flames

Like Rep. Katie Porter's (D., Calif.) nine-year-old daughter says: “The earth is on fire and we’re all going to die soon”

Nope

World is actually burning ever less

References here: facebook.com/bjornlomborg/p…
Not because forests are decreasing — forest area increasing since 1982
essd.copernicus.org/articles/12/12…

"We show that—contrary to the prevailing view that forest area has declined globally—tree cover has increased by 2.24 million km2" nature.com/articles/s4158…
Yet, the claims of increasing fire are almost everywhere, here Boston Globe falsely claiming the new UN report says "the world is on fire"

Read 5 tweets
19 Oct
Even if entire EU went net-zero today and stayed net-zero for the rest of the century

impact rather small, reducing temperature rise in 2100 by 0.14°C (0.25°F)

Because vast part of 21st-century emissions come from currently poor world

UN climate model live.magicc.org
We don't have good estimates of what the EU net-zero policy will cost,

but similar estimates for the US shows 11.9% and for New Zealand 16% of GDP (environment.govt.nz/assets/Publica…)

It would imply costs of €6.300-8.500 per person per year (lower than US, because EU less rich)
So we have well-meaning EU leaders jetting off to Glasgow to commit to even stronger climate policies

that will drive up energy costs even more

cost EU citizens 10+% of their incomes

while having an immeasurable impact on climate by century's end

Read 7 tweets
17 Oct
US going net-zero will cost more than $11,300 per person per year in 2050 according to new Nature study

That is almost 500x as much as average American willing to pay

That won't end well

my comment in WSJ
wsj.com/articles/clima…
archive.ph/4K48e
nature.com/articles/s4155…
Compare the cost of US net-zero at 12+% GDP with the UN Climate Panel estimate of cost if we do *nothing* against climate change:

2.6% of GDP by 2100

We are currently doing too little, but doing too much is also dumb

ipcc.ch/sr15/
Even if entire US went net-zero today and stayed net-zero for the rest of the century

impact rather small, reducing temperature rise in 2100 by 0.3°F (0.16°C)

Because vast part of 21st century emissions come currently poor world

Using UN climate model live.magicc.org
Read 7 tweets

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