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
Explore more from The Transmitter
Alison Barth discovers how different neuron types contribute to cortical function
Barth uses learning tasks in mice as a tool to drive synaptic plasticity in the sensory cortex, hoping to unlock more general principles of how the cortex works.
Alison Barth discovers how different neuron types contribute to cortical function
Barth uses learning tasks in mice as a tool to drive synaptic plasticity in the sensory cortex, hoping to unlock more general principles of how the cortex works.
By
Paul Middlebrooks
5 August 2026 | 1 min read
Virus-like particles deliver gene-editing tools into Duchenne mouse model
The approach uses a protein found in fruit flies to ferry the gene editor Cas9 into muscle cells.
Virus-like particles deliver gene-editing tools into Duchenne mouse model
The approach uses a protein found in fruit flies to ferry the gene editor Cas9 into muscle cells.
By
Brianna Abbott
5 August 2026 | 5 min read
Textbook model of hippocampus’s role in memory may need updating
The CA3 region, long thought to have just one circuit, has two, sporting different wiring and functions, a new preprint suggests.
Textbook model of hippocampus’s role in memory may need updating
The CA3 region, long thought to have just one circuit, has two, sporting different wiring and functions, a new preprint suggests.
By
Alissa de Chassey
4 August 2026 | 5 min read