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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‘Push-pull’ recipe for neural wiring used in multiple brain regions
A versatile pair of proteins steers neurons toward their targets and helps establish the brain’s sensory maps, new studies suggest.
‘Push-pull’ recipe for neural wiring used in multiple brain regions
A versatile pair of proteins steers neurons toward their targets and helps establish the brain’s sensory maps, new studies suggest.
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Holly Barker
5 June 2026 | 5 min read
Reward-learning algorithm hardwired into dopamine circuit
The finding bolsters the canonical model of reward prediction error, which has come under scrutiny in recent years.
Reward-learning algorithm hardwired into dopamine circuit
The finding bolsters the canonical model of reward prediction error, which has come under scrutiny in recent years.
By
Natalia Mesa
5 June 2026 | 5 min read
Exclusive: Brain and spinal cord institute halts research, citing funding problems
The Burke Neurological Institute, which calls itself “the only research institute in the U.S. dedicated to finding treatments to repair the brain and spinal cord,” ceased research operations on 22 May.
Exclusive: Brain and spinal cord institute halts research, citing funding problems
The Burke Neurological Institute, which calls itself “the only research institute in the U.S. dedicated to finding treatments to repair the brain and spinal cord,” ceased research operations on 22 May.
By
Lauren Schenkman
4 June 2026 | 5 min read