block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.
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Photograph: Simon Hill
Thanks to Steven Forsythe for sharing a report on the use of agar seaweed in Britain during WWII, Barbara Buchberger at the Robert Koch Institute for pointing out Koch’s use of gelatine for the identification of cholera, and the surviving relative of Fanny Angelina Hesse for sharing a trove of unpublished material.
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10171-w