Leto Sapunar is a freelance science journalist covering physics, space, climate and science accountability since 2020. He has been writing for Popular Science since early 2021, and his work can also be found in Scientific American, Inside Climate News and Retraction Watch, among other outlets.
Leto Sapunar
From this contributor
Pinning hope to ketamine
Doctors can prescribe it, but evidence that ketamine eases autism traits is still preliminary.
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Nearly 400 compounds affect behaviors tied to autism-linked genes in zebrafish
Estropipate, paclitaxel and levocarnitine altered behaviors tied to SCN2A and DYRK1A variants specifically, a new open-source platform revealed.
Nearly 400 compounds affect behaviors tied to autism-linked genes in zebrafish
Estropipate, paclitaxel and levocarnitine altered behaviors tied to SCN2A and DYRK1A variants specifically, a new open-source platform revealed.
By
Charles Q. Choi
16 April 2026 | 4 min read
What neuroscientists want from a new NINDS director
The search is underway for the next director of the U.S. National Institute of Neurological Disorders and Stroke, who will face a range of challenges, neuroscientists say, but will also have an “immense opportunity to do good things.”
What neuroscientists want from a new NINDS director
The search is underway for the next director of the U.S. National Institute of Neurological Disorders and Stroke, who will face a range of challenges, neuroscientists say, but will also have an “immense opportunity to do good things.”
By
Helena Kudiabor
15 April 2026 | 4 min read
Arousal neurons’ activity explains brain’s blood flow dynamics in mice
The findings could influence how researchers interpret signals from techniques that use blood flow as a surrogate for neuronal activity.
Arousal neurons’ activity explains brain’s blood flow dynamics in mice
The findings could influence how researchers interpret signals from techniques that use blood flow as a surrogate for neuronal activity.
By
Claudia López Lloreda
15 April 2026 | 5 min read