Scientists find yeast in ancient Iceman’s guts – and make sourdough bread
Scientists have discovered four types of yeast in the gut of Oetzi the Iceman, a frozen mummy over 5,300 years old. This yeast was used to successfully create sourdough bread after extensive experimentation. The findings suggest that the Iceman's microbiome is a complex ecosystem rather than a static time capsule.
- ▪The yeast found in Oetzi's gut can survive sub-zero temperatures.
- ▪Scientists used the ancient yeast to make a successful sourdough bread after three months of effort.
- ▪The study revealed that Oetzi's microbiome contains bacteria that are nearly extinct in modern humans.
3 outlets in our directory ran this story, first to last over 12 hours. Coverage spans 2 points on the political spectrum — 1 lean left, 1 centre.
- ▪ Scientists find yeast in frozen mummy's guts, use it to make bread — CBS News — Top
- ▪ Scientists find yeast in ancient Iceman’s guts — and make bread — Japan Times
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| Original publisher | Straits Times — World |
| Canonical URL | https://www.straitstimes.com/world/europe/scientists-find-yeast-in-ancient-icemans-guts-and-make-sourdough-bread |
| Publication time | Wed, 03 Jun 2026 09:10:00 +0800 |
| Retrieval time | 2026-06-03T01:36:59.801Z |
| Last seen | 2026-06-03T01:36:59.801Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | YnSTRayr61io · 3 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
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Scientists find yeast in ancient Iceman’s guts – and make sourdough breadSign up now: Get ST's newsletters delivered to your inboxThe scientists discovered four different yeasts that can survive sub-zero temperatures in the Iceman's guts.PHOTO ILLUSTRATION: UNSPLASHPublished Jun 03, 2026, 09:10 AMUpdated Jun 03, 2026, 09:10 AMPARIS – Yeast has been growing in the guts of a frozen mummy called Oetzi the Iceman for thousands of years, scientists have discovered, telling AFP that they used it to make a tasty sourdough bread.More than 5,300 years ago – before the Egyptian pyramids were built – Oezti was strolling through the Alps on the border of Austria and Italy when he was killed by an arrow in the back.He remained frozen in the ice until two German hikers stumbled across his mummified…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Straits Times — World.