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NeuroscienceWeird Science

Brains, memory, perception, behaviour, and the many ways your nervous system edits reality. Every article links back to the papers, journals, or source material behind the claims.

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🧠 Neuroscience

Octopuses Edit Their RNA When the Ocean Gets Cold, Because Apparently DNA Was Too Permanent

Octopuses and squid can recode thousands of RNA sites in their nervous systems, changing proteins without rewriting DNA. In colder water, some octopuses appear to dial that editing up like a molecular thermostat. Nature gave them live patch notes.

WTF Score10/10

21 Jun 2026

8 min

Diagram of the enteric nervous system in the gut wall.

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🧠 Neuroscience

Your Gut Has Hundreds of Millions of Neurons, Makes Most of Your Peripheral Serotonin, and Basically Has Opinions

The enteric nervous system — a web of over 500 million neurons lining your gastrointestinal tract — can function completely independently of your brain. It produces most of the serotonin in your body. Scientists call it the 'second brain.' Your stomach has feelings and it's been trying to tell you things.

WTF Score8/10

1 Jun 2026

7 min