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Science Weekly

Science Weekly

Auteur(s): The Guardian
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 Twice a week, the Guardian brings you the latest science and environment news© 2025 Guardian News & Media Limited or its affiliated companies. All rights reserved. Science
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  • The brain’s 5 eras, the vaccine that protects against dementia, altruistic ants

    The brain’s 5 eras, the vaccine that protects against dementia, altruistic ants
    Dec 4 2025
    Science editor Ian Sample sits down with co-host Madeleine Finlay and science correspondent Hannah Devlin to hear about three eye-catching stories from the week, including a study showing that the brain has five ‘eras’, with adult mode not starting until our early 30s. Also on the agenda is new research showing the shingles vaccine not only protects against dementia but could actually slow its progress, and a paper exploring how ants sacrifice themselves when they become infected with pathogens to protect their healthy relatives. Help support our independent journalism at theguardian.com/sciencepod
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    18 min
  • Is AI making us stupid?

    Is AI making us stupid?
    Dec 2 2025
    Artificial intelligence can execute tasks in seconds that once took humans hours, if not days to complete. While this may be great for productivity, some researchers are concerned that our increasing use of AI could be impacting our ability to tackle difficult problems and think critically. To find out where the science stands, and how worried we should be about the potential of AI to change how we think, Ian Sample hears from Madeleine Finlay and Sam Gilbert, professor of neuroscience at University College London. Help support our independent journalism at theguardian.com/sciencepod
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    21 min
  • Is it the beginning of the end for animal testing?

    Is it the beginning of the end for animal testing?
    Nov 27 2025
    Patrick Vallance, the minister for science, research and innovation, recently unveiled a plan to cut animal testing through greater use of AI and other technologies, with the eventual aim of phasing it out altogether. To understand how this will affect research and what could be used in place of animal models, Madeleine Finlay hears from science editor Ian Sample, Prof Hazel Screen of Queen Mary University London and Prof Kevin Harrington from the Institute of Cancer Research. Help support our independent journalism at theguardian.com/sciencepod
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    18 min
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