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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Is there a neuroscientist in the House?
Sam Wang, a neuroscientist running for the U.S. House of Representatives, has been considering American democracy for decades.
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Sam Wang, a neuroscientist running for the U.S. House of Representatives, has been considering American democracy for decades.
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25 February 2026 | 7 min read