Our brain evolved from two primitive nervous systems that merged

A 9.5-day-old mouse embryo. The front of the brain is blue and the back of the brain is red, which extends into the spinal cord Loh Laboratory/Stanford Medicine Our brain may be a hybrid of two ancient nervous systems that were packaged together…
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ImpactNotable 30/100
Why it mattersRule-based estimate: no strong signals; trust 7/10.
RegionsGlobal
Published1 h ago (Fri, 18 Sep 2026 09:00:00 GMT)
RetrievedFri, 18 Sep 2026 09:00:50 GMT via rss
ClassifiedFri, 18 Sep 2026 09:00:56 GMT by heuristic
AuthorAlice Klein