Marion Greenup

Former vice president of administration
Simons Foundation

Marion Greenup joined the Simons Foundation in 2007 as senior vice president of administration and provided support for The Transmitter since its inception. She has a Master of Public Health from Columbia University and a Master of Arts in Education in Early Childhood Development from Tulane University. Previous positions included administrative roles at the NYU Child Study Center, Columbia University Health Sciences, and the Department of Pediatrics. She also served as senior vice president of education and health promotion at the March of Dimes.

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Myelin

By Calli McMurray

11 February 2026

5 min read

Oligodendrocytes need mechanical cues to myelinate axons correctly

Without the mechanosensor TMEM63A, the cells cannot deposit the appropriate amount of insulation, according to a new study.

Myelin

Oligodendrocytes need mechanical cues to myelinate axons correctly

Without the mechanosensor TMEM63A, the cells cannot deposit the appropriate amount of insulation, according to a new study.

By Calli McMurray

11 February 2026 | 5 min read

Brain Inspired

By Paul Middlebrooks

11 February 2026

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Modern AI is simply no match for the complexity likely required for harboring consciousness, says Jaan Aru

He argues that our brain’s computations are of a completely different nature than any artificial intelligence because they take place across many spatial and temporal scales and are inextricably entwined with biological materials.