Sex chromosomes

Recent articles

Photograph of a cardinal with male-typical red feathers on one side and more drab, female-typical feathers on the other.

What birds can teach us about the ‘biological truth’ of sex

Part of our job as educators is to give students a deeper understanding of the true diversity of sex and gender in the natural world.

By Nicole M. Baran
22 April 2025 | 7 min read

Explore more from The Transmitter

Illustration of worm on top of a purple rock with neurons in the background.

The three-banded panther worm is rewriting the story of brain evolution

The animal has a brain structure all its own, according to a 2026 preprint. The finding hints that brains could have evolved centralization before regionalization.

By Sarah DeWeerdt
4 November 2026 | 7 min read

Does cognition happen in brain areas or between them?

Michael Cole explains how "brain flows" are the fundamental units of brain function and cognition.

By Paul Middlebrooks
4 November 2026 | 1 min read
Brain Flows book cover

‘Brain Flows: How Network Dynamics Compose the Human Mind,’ an excerpt

In his new book, published today, Michael W. Cole examines how the movement of neuronal activity between neuronal populations shapes free will, intelligence and creativity. In this excerpt from Chapter 1, Cole explores why activity flows could unify efforts to map brain functions and connectivity.

By Michael W. Cole
3 November 2026 | 9 min read