Leto Sapunar headshot

Leto Sapunar


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 AmericanInside Climate News and Retraction Watch, among other outlets.

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Why expertise won’t protect you from AI’s influence

When writing a grant or reasoning about a problem, artificial intelligence can exert a subtle bias that often goes undetected, even if we’re doing our best to be aware of it.

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European Research Council backtracks on stricter grant resubmission rules

The swift reversal came after more than 1,000 scientists signed an open letter protesting the rules last week.

By Lauren Schenkman
1 May 2026 | 4 min read
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What leeches reveal about movement

After encountering setbacks in her study of the neuromuscular system in vertebrates, Lidia Szczupak turned to leeches to explore how the nervous system coordinates movement.

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