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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23 September 2026 | 0 min watch
How neuromorphic computing could improve AI
Mihai Petrovici explains what neuromorphic computing is and how it can speed up and reduce energy consumption in artificial intelligence and brain simulations.
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Gaute Einevoll
23 September 2026 | 102 min listen
Hasty stem cells highlight potential limitation with cortical organoids
The models recapitulate many key developmental processes, but some radial glial cells in mouse organoids make neurons earlier than they should.
Hasty stem cells highlight potential limitation with cortical organoids
The models recapitulate many key developmental processes, but some radial glial cells in mouse organoids make neurons earlier than they should.
By
Giorgia Guglielmi
22 September 2026 | 4 min read