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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Writing science that humans and machines can read
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Maternity induces lasting gene-expression changes in mouse brains
The findings add to a small but growing body of research on neurological changes linked to pregnancy, birth and parenting.
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The findings add to a small but growing body of research on neurological changes linked to pregnancy, birth and parenting.
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Amber Dance
12 June 2026 | 5 min read
IQ’s link to brain structure, function in children may be a mirage
A child’s socioeconomic status, screen time and amount of sleep all show stronger associations with measures of brain structure and function, according to an imaging study of nearly 12,000 9- to 10-year-olds.
IQ’s link to brain structure, function in children may be a mirage
A child’s socioeconomic status, screen time and amount of sleep all show stronger associations with measures of brain structure and function, according to an imaging study of nearly 12,000 9- to 10-year-olds.
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Natalia Mesa
11 June 2026 | 5 min read