Scientists challenge a 70-year-old “lizard brain” myth

A long-standing picture of brain evolution as newer, rational layers stacked on top of an ancient “lizard brain” may be deeply misleading. Researchers found that evolution instead appears to balance two competing styles of brain wiring, expanding one while shrinking the other depending on what an animal needs to survive.

Officials and experts continue to monitor developments closely as the situation unfolds. Communities affected by the story are watching for further updates in the days ahead. Analysts say the implications could extend well beyond the immediate headlines, with policymakers and industry leaders expected to respond in the coming weeks.

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