A Fossil Capybara Tooth Suggests the Atacama Desert Was Once Surprisingly Wet
Capybaras have fast become one of the internet’s favorite animals. Turns out, they might also be helping scientists learn more about the ancient past. Researchers at the University of Arizona and others have just announced the discovery of a fossilized capybara tooth in Chile dating back nearly nine million years ago, and the fossil may reshape our current understanding of the area where it was located, the Atacama Desert.
- ▪Capybaras have fast become one of the internet’s favorite animals.
- ▪Turns out, they might also be helping scientists learn more about the ancient past.
- ▪Researchers at the University of Arizona and others have just announced the discovery of a fossilized capybara tooth in Chile dating back nearly nine million years ago, and the fossil may reshape our current understanding of the area where
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| Original publisher | Gizmodo |
| Canonical URL | https://gizmodo.com/a-fossil-capybara-tooth-suggests-the-atacama-desert-was-once-surprisingly-wet-2000814119 |
| Publication time | Fri, 18 Sep 2026 21:30:50 +0000 |
| Retrieval time | 2026-09-18T21:33:45.467Z |
| Last seen | 2026-09-18T21:33:45.467Z |
| 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 | nYFSC_xKrSe6 · 1 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 |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Capybaras have fast become one of the internet’s favorite animals. Turns out, they might also be helping scientists learn more about the ancient past. Researchers at the University of Arizona and others have just announced the discovery of a fossilized capybara tooth in Chile dating back nearly nine million years ago, and the fossil may reshape our current understanding of the area where it was located, the Atacama Desert. It’s presence suggests that at least parts of this desert, considered one of the oldest on Earth, haven’t always been so arid.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Gizmodo.
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