Sandwalk

                                    Strolling with a skeptical biochemist

Tuesday, March 17, 2026

Happy St. Patrick's Day 2026!

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Happy St. Patrick's Day! These are my great-grandparents Thomas Keys Foster, born in County Tyrone on September 5, 1852 and Eliza Ann Jo...
1 comment:
Friday, March 13, 2026

Joe Felsenstein wins the 2026 Mendel Medal

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The Genetics Society has awarded the 2026 Mendel Medal to Joe Felsenstein. Some of you may know Joe because he sometimes posts comments on...
8 comments:
Tuesday, March 10, 2026

Three kinds of adaptationism

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Arlin Stoltfus wrote an excellent book where he makes the case for mutationism—the idea that the course of evolution is determined by the oc...
4 comments:
Friday, March 06, 2026

A new kind of PhD program?

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Getting a Ph.D. means that you become an expert in that subject and you have demonstrated that you can think critically enough to advance ou...
9 comments:
Monday, February 23, 2026

Glyphosate (Roundup®) is safe

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There have been dozens of studies on the possible harmful effects of glyphosate. There are many well-funded organizations and tons of lawyer...
5 comments:

How glyphosate (Roundup®) works

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Glyphosate, the active ingredient in the herbicide Roundup®, is back in the news in the United States so I think it's time to repost an ...
2 comments:
Friday, February 20, 2026

Skip the hard bits! (The Two Cultures)

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I've been reading Mathew Cobb's biography of Francis Crick and a sentence in the Prologue caught my eye. Cricks' scientifi...
4 comments:
Monday, February 16, 2026

Carl Zimmer writes about AlphaGenome

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We may not know a lot about how artificial intelligence (AI) algorithms work but the one thing we do know is that they are only as good as t...
3 comments:
Saturday, February 14, 2026

Protein concentration in bacteria is regulated primarily at the level of transcription initiation

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The amount of a given protein in Escherichia coli depends on a number of factors such as the amount of mRNA and the rate of translation. Th...
1 comment:
Friday, February 13, 2026

Paralogs and LUCA

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We're interested in the last universal common ancestor of all life (LUCA). In theory, this is a species that gave rise to both Bacteria ...
1 comment:
Tuesday, February 10, 2026

How intelligent is artificial intelligence?

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Over the past few years I've been assessing AI algorithms to see if they can answer difficult questions about junk DNA, alternative spli...
4 comments:

Genetics and the human life span

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It seems reasonable to assume that there's a genetic component to aging and the human life span. For example, it's clear that if you...
1 comment:
Sunday, February 01, 2026

Is epigenetics one of the best ideas of the 21st century?

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New Scientist has produced a special issue on the best ideas of the 21st century . Here's the complete list.
25 comments:
Thursday, January 29, 2026

NCSE and the Nature of Science

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The National Center for Science Education (NCSE, United States) is an organisaton devoted to defending evolution and climate change. It has ...
3 comments:
Wednesday, January 28, 2026

Can NATO defend itself without the United States?

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American Secretary of State Marco Rubio thinks that the United States of America has been subsidizing the defense of Europe and it's tim...
5 comments:
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