Sandwalk

                                    Strolling with a skeptical biochemist

Saturday, August 15, 2026

Tofino Airport: 1942 and 2026

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We visited Tofino on the west coast of Vancouver Island (British Columbia, Canada). We took a seaplane from Vanvouver harbor to the harbor i...
Tuesday, August 11, 2026

Intelligent Design Creationists are still spreading lies about junk DNA

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Intelligent Design Creationists have convinced themselves that there's no junk DNA in the human genome. They predicted this more than 30...
5 comments:
Friday, August 07, 2026

The evolution of metabolic enzymes in LUCA, Bacteria, and Archaea

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The best scenario for the origin of life is that it first arose in hydrothermal vents deep in the ocean. The first catalysts of metabolic re...
15 comments:
Sunday, June 14, 2026

Do scientists at Amgen understand the human genome?

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Amgen Inc. is a major pharmaceutical company based in Thousand Oaks, California (USA). [ Wikipedia: Amgen ] It was founded in 1980 to exploi...
21 comments:
Monday, May 18, 2026

Anaerobic carbon fixation in ancient prokaryotes

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Most of us were taught that plants are the main source of fixing carbon from carbon dioxide. Some of us even had to memorize the enzymes and...
3 comments:
Monday, May 11, 2026

The functions of human protein-coding genes

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There are about 20,000 protein-coding genes in the human genome. We'd like to know what all these genes are doing but the only way to fi...
1 comment:
Sunday, May 10, 2026

Why do scientists at "elite" universities dominate scientific discourse?

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We all know that scientists at elite universities publish a lot more papers than scientists at other universities. Why is that? Is it becaus...
2 comments:
Saturday, May 09, 2026

Pervasive transcription = genes + noise

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Most of the DNA in the human genome is transcribed at some point in development or in some cell type. This fact has been known since the l...
7 comments:
Friday, May 08, 2026

Philosophers talk about junk DNA

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There is considerable debate in the scientific literature over the amount of junk DNA in the human genome. The standard model was developed ...
2 comments:
Monday, April 27, 2026

Ask Gemini: "What is the difference between junk DNA and non-coding DNA?"

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This is weird. I was a bit bored so I asked Gemini the following question: "What is the difference between junk DNA and non-coding DNA?...
5 comments:
Tuesday, April 14, 2026

How many pseudogenes in the human genome?

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There are somewhat less than 25,000 genes in the human genome and there are probably about the same number of pseudogenes. Pseudogenes are...
14 comments:
Saturday, April 11, 2026

Suggestions for philosophers who want to contribute to philosophical biology

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Can modern biologists get along with modern philosphers of biology? James DiFrisco and Steven Orzack think they can and they have suggestion...

Suggestions for biologists who want to contribute to philosophical biology

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Can modern biologists get along with modern philosphers of biology? James DiFrisco and Steven Orzack think they can and they have suggestion...

Chris Christie says baby boomers are the most selfish generation in American history

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The leading edge of the baby boomer generation is turning 80 this year (that's me!). Chris Christie is a trailing edge baby boomer. C...
1 comment:
Friday, April 10, 2026

How can we combat the spread of misinformation?

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This is a serious question. We ( Sandwalk readers) know that there's a lot of science misinformation being spread in the popular scienc...
17 comments:
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