Leah Shaffer is a freelance science writer based in St. Louis, Missouri. Her stories have appeared in publications such as Wired, The Atlantic, Discover, NOVA Next and UnDark. She writes about biology, medicine and the weird critters inside and outside the human body.
Leah Shaffer
Freelance writer
From this contributor
Supplements, worms and stool: How families are trying to game the gut to treat autism traits
Scientists are playing catch-up as microbiome-based treatments for autism proliferate.
Supplements, worms and stool: How families are trying to game the gut to treat autism traits
By
Leah Shaffer
26 June 2019 | 16 min read
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A more complex picture of how an animal’s brain tracks its location is starting to emerge.
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The three-banded panther worm is rewriting the story of brain evolution
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The three-banded panther worm is rewriting the story of brain evolution
The animal has a brain structure all its own, according to a 2026 preprint. The finding hints that brains could have evolved centralization before regionalization.
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Does cognition happen in brain areas or between them?
Michael Cole explains how "brain flows" are the fundamental units of brain function and cognition.
Does cognition happen in brain areas or between them?
Michael Cole explains how "brain flows" are the fundamental units of brain function and cognition.
By
Paul Middlebrooks
4 November 2026 | 1 min read