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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Remembering Barbara Finlay, ‘maverick’ of evolutionary neuroscience
Finlay, who died on 12 September, championed the idea that developmental constraints dictate how evolution sculpts brains, a concept she used to model the timing of hundreds of events and align them across mammalian species.
Remembering Barbara Finlay, ‘maverick’ of evolutionary neuroscience
Finlay, who died on 12 September, championed the idea that developmental constraints dictate how evolution sculpts brains, a concept she used to model the timing of hundreds of events and align them across mammalian species.
By
Calli McMurray
23 October 2026 | 8 min read
Crows have brains ‘in the fast lane’
The birds accurately complete decision-making tasks twice as fast as primates, although their endbrains look considerably different.
Crows have brains ‘in the fast lane’
The birds accurately complete decision-making tasks twice as fast as primates, although their endbrains look considerably different.
By
Sarah Thau
22 October 2026 | 4 min read
Prevalence of profound autism declines with new definition
The updated, more precise definition used in a CDC study includes adaptive scores.
Prevalence of profound autism declines with new definition
The updated, more precise definition used in a CDC study includes adaptive scores.
By
Brianna Abbott
22 October 2026 | 5 min read