Tomas Pueyo Profile picture
Jan 29, 2021 7 tweets 2 min read Read on X
I introduce the "Scary Virus Paradox":
"After clearing a threshold, the less deadly a virus is, the more it will kill." Image
(Deadliness here defined as R0 * IFR)
(log-log graph)

This is obviously caused by society's reaction: the deadlier a virus, the scarier, and the more society acts in unison against it, like for Ebola or SARS.

Nobody cares (cared?) about the flu, so it kills ~350k ppl a year.
Measles antivaxxers, covidiots, antimaskers and the like are therefore a predictable reaction to a virus' deadliness.
This has not always been true. In the past, the deadlier a virus was, the more it killed. Smallpox is a perfect example. Image
But as we learned about medicine and epidemiology, we figured out how to tame the deadliest viruses. The ones that still kill, thus, kill in part because we don't pay as much attention to them.
These are not the only factors. We do pay attention to the flu, but its fast mutation means common vaccine evasion. Lots of animals also have the flu, so it's nearly impossible to eradicate.

But we could probably do a better job at stopping it. If it killed 100x, we would.

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More from @tomaspueyo

Sep 24
Massive floods across the Western world. What pattern do you see?

1. Massive floods in Vienna, carrying cars and everything else on its path.
The Danube is mostly embanked, no floodplains
2. Budapest is underwater
The city is also built on the Danube's floodplain. In fact, most of the Danube has embankments, and the floodplains and dams upstream are not enough to absorb all the water
3. Flood disaster in Głuchołazy, Poland, worst one in 100 years. Why? Because the river is fully embanked, has no floodplains anymore, and goes through the middle of the city



Image
Read 12 tweets
Sep 18
If wetlands prevent floods and straight rivers are bad, why do we keep doing it?

Here's why, and how we can do better, along with the most AMAZING visualizations of rivers:Image
What LA did to its river is the worst you can do: A line of concrete devoid of life, replacing nature with brutalist geometry
Image
Image
That's the type of disregard for nature that ends with situations like this one:
Read 23 tweets
Sep 11
One event made these things possible:
Roman civilization
Industrial Revolution
The oil wealth of Arab countries
Russia's invasions
The Mongol Empire
Globalization
Southern Europe richer than Northern Africa
And more

What was it?
The death of an ocean
I'm super excited about this! AFAIK, nobody has put all these facts together. You're learning about it here 1st!

To understand what happened, we need to start in this region of the world. Do you notice something special? Image
1. SEAS
It has plenty of huge inland seas! Notice how we can't find such seas anywhere else in the world*

The Mediterranean, Black, Azov, Caspian, Aral and Red Seas (and the Persian Gulf) are all in the same area, either cut off from oceans or connected by very narrow passes. Image
Read 18 tweets
Sep 8
I've been banging my head on a pbm and I need help, Twitter

Why are there huge dunes on some coasts and not others?

You have dunes like these ones in the Namib desert in Namibia. Why? How do they form? Why only here?

I'll update this thread as I get answers! Image
Apparently strong, dry winds blow from the interior towards the Atlantic ocean, accumulating the sand. As it accumulates, it blows or falls into the ocean, creating these huge slopes. OK.


Image
Image
Image
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You can even see these dunes in the satellite
The obvious question becomes: Why just there and not elsewhere on the Namib desert coast? Image
Read 16 tweets
Aug 30
Can solar energy costs keep shrinking?
The wealth of humanity and health of the environment are at stake

Solar allies: Costs will keep shrinking!
Skeptics: They're can't! They're already growing!
Who's right?

Here's the story of the biggest energy revolution of the decade:
1. Solar is already the cheapest source of electricity!
It's also one that most ppl love, so few ppl block it—unlike nuclear or fossil fuels

So solar energy is the best candidate to get us cheap energy and with very little CO2 emissions to stop global warming Image
2. There's no such thing as a rich country that consumes little energy. The more energy a country consumes, the richer it is

If we want to be richer, we MUST generate more electricity Image
Read 22 tweets
Aug 19
Pumpkins can grow to over 2000 lbs (1 ton) for the same reason the Dutch countryside is purple at night: Because plants are green. Thread 🧵
These pumpkins come from Alaska
Why? Because in the growing season, it gets 20 hours of sunlight
More sunlight, more energy, more growth
Image
Image
They're not the only vegetable to grow so big. Here are Alaskan cabbages. Same principle: 20h of light a day Image
Read 13 tweets

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