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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Headshots of Yale researchers Yong-Hui Jiang and Jiangbing Zhou.

Supported by a $40 million NIH grant, Yale brain shuttle technology raises questions

Yale University claims its STEP platform might be able to deliver gene-editing tools into the brain via multiple routes. Researchers are eager to see more.

By Natalia Mesa
3 June 2026 | 11 min read

What counts as a ‘naturalistic’ behavior?

Nedah Nemati explains how neuroscience methods and the lived experience of the scientists themselves shape how we define the behaviors we seek to explain.

By Paul Middlebrooks
3 June 2026 | 1 min read
Research image of brain cells involved with Amyotrophic lateral sclerosis (ALS) illuminated through genetic tools

Allen Institute sets sights on treatments for five brain diseases

The Brain Health Accelerator program aims to harness single-cell transcriptomics and cell-type-specific genetic tools to develop treatments for Alzheimer’s, Huntington’s and Parkinson’s diseases, Lewy body dementia and ALS.

By Calli McMurray
2 June 2026 | 5 min read