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.

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‘Digital humans’ in a virtual world

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Research image of brain glucose levels in mice.

Food for thought: Neuronal fuel source more flexible than previously recognized

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Abstract illustration of overlapping lines.

Claims of necessity and sufficiency are not well suited for the study of complex systems

The earliest studies on necessary and sufficient neural populations were performed on simple invertebrate circuits. Does this logic still serve us as we tackle more sophisticated outputs?

By Grace Lindsay
7 February 2025 | 6 min read