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Scientists study Jonathan, the tortoise estimated to be 194, for clues to longevity

Science & Space

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University of Cambridge: research summary, October 7, 2026 Guinness World Records: Jonathan’s age estimate, record and life on St Helena, June 25, 2026 Vanderbilt Health: sampling, sequencing, collaborators and further-research plans, October 7, 2026 Study reference: Vaisvil et al., Science Advances, DOI 10.1126/sciadv.adw8887. Publication details verified in institutional releases; full paper not directly reviewed.

These credits cover the two archival photographs selected for this website article. Both are original works by Kevstan, dated March 10, 2020, and licensed CC BY-SA 4.0 on their Wikimedia Commons source pages. Photo attribution, source links and the license link must remain available; any image adaptations are offered under CC BY-SA 4.0. The research institutions’ press-release photographs are not used. Original OddityDrop article text is separate from the image licenses.

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