Popular Science


Collection of my brief articles on popular science. Most have also been published in Spanish.
Full list at: https://manuelalfonseca.acta.es/docs/papersd.htm.

Manuel Alfonseca

Thursday, October 23, 2025

William Crookes, Unorthodox Scientist

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William Crookes One of the most surprising scientific figures of the second half of the 19th century in England was William Crookes (1832-19...
Thursday, October 16, 2025

Do people with Down Syndrome have a right to life?

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A post  I published in this blog in 2017 ended with this paragraph: Why are human beings conceived with trisomy of chromosome 21 (Down syn...
Thursday, October 9, 2025

Science fiction and the multiverse

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In several previous posts (see one here ), I have argued that multiverse theories are not science, as they cannot be proven false, but rath...
Thursday, October 2, 2025

Humanoid robots at home?

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Technological companies are investing huge amounts of money to develop humanoid robots for use in the home. One such company, Figure AI , c...
Thursday, September 25, 2025

Hallucinations or Lies

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My hallucinations  by August Natterer Since ChatGPT appeared in late 2022, I have been warning that the answers provided by Large Language M...
Wednesday, September 17, 2025

What’s the matter with dark matter?

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Comparison of MOND and Newtonian rotation (Wikimedia) Nine years ago, I published here a post entitled  Dark Matter or New Theory , where I...
Thursday, September 11, 2025

Traitors to the Human Species

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The Three Body Problem is a gripping science fiction novel by Liu Cixin, which contains a wealth of information about ancient and modern Ch...
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Manuel Alfonseca
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