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.
Explore more from The Transmitter
Autism scientists push back on CDC’s inaccurate vaccine claims
The CDC website now falsely suggests that autism-vaccine research is still an open question, prompting distrust among researchers—some of whom anticipate “more unreliable statements coming from the junta that took over” the agency.
Autism scientists push back on CDC’s inaccurate vaccine claims
The CDC website now falsely suggests that autism-vaccine research is still an open question, prompting distrust among researchers—some of whom anticipate “more unreliable statements coming from the junta that took over” the agency.
By
The Transmitter
21 November 2025 | 6 min read
Gene replacement therapy normalizes some traits in SYNGAP1 model mice
The first published virus-based gene therapy for SYNGAP1 deletion yields benefits despite the gene’s long length and complexity.
Gene replacement therapy normalizes some traits in SYNGAP1 model mice
The first published virus-based gene therapy for SYNGAP1 deletion yields benefits despite the gene’s long length and complexity.
By
Charles Q. Choi
20 November 2025 | 5 min read
Does AI understand what it produces? Henk de Regt explores how we might assess understanding in machines and humans
Building on his philosophy of how scientists understand what they work on, de Regt is extending his approach to test understanding in machines.
Does AI understand what it produces? Henk de Regt explores how we might assess understanding in machines and humans
Building on his philosophy of how scientists understand what they work on, de Regt is extending his approach to test understanding in machines.
By
Paul Middlebrooks
19 November 2025 | 1 min read