Science word of the day: Cenozoic
Planet Earth Evolution Science word of the day: Cenozoic What does 'Cenozoic' mean? By Stephanie Pappas Published 26 July 2026 In Features When you purchase through links on our site, we may earn an affiliate commission. It started 66 million years ago with the abrupt mass extinction known as the Cretaceous-Paleogene extinction event, when a massive asteroid hit Earth and wiped out the nonavian dinosaurs.
- ▪Planet Earth Evolution Science word of the day: Cenozoic What does 'Cenozoic' mean?
- ▪By Stephanie Pappas Published 26 July 2026 In Features When you purchase through links on our site, we may earn an affiliate commission.
- ▪It started 66 million years ago with the abrupt mass extinction known as the Cretaceous-Paleogene extinction event, when a massive asteroid hit Earth and wiped out the nonavian dinosaurs.
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Live Science |
| Canonical URL | https://www.livescience.com/planet-earth/evolution/science-word-of-the-day-cenozoic |
| Publication time | Sun, 26 Jul 2026 08:00:00 +0000 |
| Retrieval time | 2026-07-26T08:02:50.925Z |
| Last seen | 2026-07-26T08:02:50.925Z |
| 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 | -cDjcVhMXXbi · 4 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 |
Rights status (four layers)
WeSearch handling by dimension
| 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
Planet Earth Evolution Science word of the day: Cenozoic What does 'Cenozoic' mean? By Stephanie Pappas Published 26 July 2026 In Features When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Cenozoic refers to Earth's current era. (Image credit: Yana Iskayeva via Getty Images) Copy link Facebook X Reddit Pinterest Flipboard Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Science word of the day: CenozoicPronunciation: See-noh-ZOH'-ihkWhat it means: The ascendency of mammals, the birth of the Himalayas, the diversification of birds — Earth's in its Cenozoic era, baby!The Cenozoic is the geological era happening right now.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Live Science.
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