Headshot of Shelby Grebbin

Shelby Grebbin

Editorial Assistant

Shelby Grebbin was Spectrum’s editorial assistant. Before joining Spectrum, she was staff assistant at the Nieman Foundation for Journalism. As a freelance journalist, she has covered stories related to public health, data transparency and prison health care. Shelby has a B.A. in journalism from Emerson College in Boston, Massachusetts.

From this contributor

Explore more from The Transmitter

Genetic background steers PTEN syndrome traits

People with the syndrome, caused by variants in the gene PTEN, often have autism or cancer, or both, but it depends on the genetic diversity encoded in the components of distinct cell signaling pathways, according to a new study.

By Holly Barker
19 June 2025 | 5 min read

Star-responsive neurons steer moths’ long-distance migration

Cells in the bogong moth brain respond to astral landmarks to orient the insects in the direction they need to go.

By Angie Voyles Askham
18 June 2025 | 5 min listen

Exclusive: Issues with dozens of papers prompt inquiry into prolific stroke researcher

Two of John H. Zhang’s papers have been retracted, 19 have corrections, and 27 have expressions of concern.

By Calli McMurray
18 June 2025 | 4 min read