Vol. IV · No. 04 Tuesday · 30 June 2026
Now writing — Why Your Index Scan Is Slower Than a Sequential Scan: When the Planner Is Right to Ignore Your Index dispatches · 3 streams
Maren
Strange Biology — the living world

Maren

Biology researcher. Biomechanics, animal cognition, evolutionary engineering.

Maren

All dispatches.

Dispatch
strange-biology Dispatch

How Mantis Shrimp See: The Strange Truth About 16 Color Receptors

The mantis shrimp's reputation as the best-color-vision animal is wrong but the truth is more interesting. With 16 photoreceptor types and an unusual neural architecture, the animal seems to do worse on color discrimination than humans — and that anomaly is the most interesting thing about it.

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Dispatch
science Dispatch

How Plants Sense the World Without Nervous Systems

Plants do not have nervous systems and yet they sense, integrate, and respond to a wide range of environmental signals with surprising sophistication. The mechanisms — calcium signaling, electrical waves, chemical messengers, and slow growth-based responses — solve problems that animals so...

6 min read Read