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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30 October 2025 | 4 min read
Image integrity issues create new headache for subarachnoid hemorrhage research
First-time sleuths found potentially problematic images in hundreds of papers about early brain injury after subarachnoid hemorrhage.
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Lauren Schneider
30 October 2025 | 5 min read
Ramping up cortical activity in early life sparks autism-like behaviors in mice
The findings add fuel to the long-running debate over how an imbalance in excitatory and inhibitory signaling contributes to the autism.
Ramping up cortical activity in early life sparks autism-like behaviors in mice
The findings add fuel to the long-running debate over how an imbalance in excitatory and inhibitory signaling contributes to the autism.
By
Sarah DeWeerdt
30 October 2025 | 6 min read