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How death rates from Covid-19 differ between vaccinated and unvaccinated
To understand how the pandemic is evolving, it’s crucial to know how death rates from COVID-19 are affected by vaccination status.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 74 posts.
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Lead Poisoning and Rome
"The bellows are burned, the lead is consumed of the fire; the founder melteth in vain: for the wicked are not plucked away. Reprobate silver shall men call them, because the Lord hath rejected them."
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Nicholas Wade: Origin of Covid – Following the Clues
“” is published by Nicholas Wade.
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United States - CO₂ and Greenhouse Gas Emissions Country Profile
Data on the United States’ greenhouse gas emissions
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UK Now Reports Myocarditis stratified by Age & Sex After Vaccine Or Sars-cov-2
Nature Medicine paper revisited: And it is shocking
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MIT-designed project achieves major advance toward fusion energy
For the first time, a large high-temperature superconducting electromagnet was ramped to a field strength of 20 tesla, the most powerful magnetic field of its kind ever created. The demonstration helps resolve the greatest uncertainty in the quest to build the first fusion power plant that can produce more energy than…
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Curves and Surfaces
Interactive article explaining how curves and surfaces are modeled.
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Starship is still not understood
Another entry into my blog series on countering misconceptions in space journalism. I discussed this post on The Space Show on November 5 2021. It has been exactly two years since my initial posts …
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Simple, solar-powered water desalination (2020)
A completely passive solar-powered desalination system developed by researchers at MIT and in China could provide more than 1.5 gallons of fresh drinking water per hour for every square meter of solar collecting area. Such systems could potentially serve off-grid arid coastal areas to provide an efficient, low-cost…
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Chemistry of Cast-Iron Seasoning (2010)
The post after this one on “black rust” describes why you should heat the pan before applying oil for seasoning. This helps the seasoning to adhere and makes the pan pleasantly black.
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The main thing about Phenylacetone meth is that there's so much of it
Since around 2009, methamphetamines have been made with phenylacetone (P2P). Is there a chemical different causing schizophrenia?
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In Defense of Myers Briggs (2020)
examines claims that the big five personality traits is more scientifically valid than the myers briggs personality indicator
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The Great Filter – Are We Almost Past It? (1998)
Combining standard stories of biologists, astronomers, physicists, and social scientists would lead us to expect a much smaller filter than we observe. Thus one of these stories must be wrong. To find out who is wrong, and to inform our choices, we should study and reconsider all these areas. For example, we should…
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The Cuboid: A DIY air purifier that's better than a box fan
Designs for a quieter, more energy efficient purifier, and data proving it really works.
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Exploring the Supply Chain of the Pfizer/BioNTech and Moderna Covid-19 Vaccines
Sections of this post were co-authored by Cornelia Scheitz. Noah Leidinger created a German translation. Piotr Kwapin created a Polish translation. Last updated on February 7, 2021. Bert Hubert’s excellent and widely shared article about Reverse Engineering the source code of the Pfizer-BioNTech SARS-CoV-2 Vaccine is…
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Nuclear energy is long-term sustainable
Some people claim nuclear fuel is inexhaustible and circular, others say we'll run out soon. We do the math. Turns out, it's roughly as inexhaustible as sunlight.
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Naval Architecture
Interactive article explaining how ships float and maintain their stability.
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Experiments on a $50 DIY air purifier (2020)
You can make a DIY air purifier in 30s. To test if it works, I generated smoke, and measured how well it removes tiny particles.
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Noted study in psychology fails to replicate, crumbles with evidence of fraud
About 80 people pointed me to this post by Uri Simonsohn, Joe Simmons, and Leif Nelson about a 2012 article, “Signing at the beginning makes ethics salient and decreases dishonest self-reports in comparison to signing at the end.” Apparently some of the data in that paper were faked; see for example here:
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Science upside for Starship
This blog is a direct follow up of Starship Is Still Not Understood, and is part of the series on popular misconceptions in space journalism. Now available in audio form. I think it is relatively s…
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How I learned to stop worrying and love the lab-leak theory
In early spring 2020, I reported an article for The New York Times on which I put the tentative headline: “New Coronavirus Is ‘Clearly Not…
52
The Geometry of Color Perception
The previous pages have explained three very different methods for defining a color: (1) the measurement of the color stimulus as a spectral emittance or reflectance curve in colorimetry ; (2) the proportional responses to the stimulus by the L , M and S cones, represented as a chromaticity diagram ; and (3) the…
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CPM MagnaCut
CPM MagnaCut is a new stainless knife steel designed to be better than anything that has been available before. Is it a success?
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Home-Built Scanning Tunneling Microscope (2015)
Scan Head STM Tips Vibration Isolation Electronics Software Scans Image Gallery Useful Links This project is my attempt to build a low-cost scanning tunneling microscope (STM) capable of atomic res…
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Wildfire restored a Yosemite watershed
Half a century of allowing lightning fires to burn in Yosemite’s Illilouette Creek Basin has recreated a lost forest ecosystem that is far more resilient to the impacts of drought, wildfire and climate change
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DNA seen through the eyes of a coder
Updates: 12th of September 2021: I’m writing a book on DNA! If you want to become a beta reader, or have suggestions, I’d love to hear from you! 8th of January 2021: This article has been revised and updated, scientifically and in terms of dead links. Revision made by Tomás Simões (@putadagravidade /…
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The Dangers of Low Head Dams (2019)
Dams serve a wide variety of purposes from hydropower to flood control to storage of water for municipal and industrials uses. But when a dam’s useful purpose fades away, the structure itself still remains. Dams come in all shapes and sizes, but contrary to what you might think, the most dangerous d
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How strong would a magnetic field have to be to kill you?
There’s a great joke in Futurama, the cartoon comedy show, about a horror movie for robots. In the movie, a planet of robots is terrorized by a giant “non-metallic being” (a mons…
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How to grow sodium chloride crystals at home
After trying for 3 years, I found a way to grow transparent, high quality sodium chloride crystals at home. Here's my procedure.