25 Nov 2025
These Hummingbirds' Bills Evolved for Fighting
Research shows that male green hermit hummingbirds have stronger bills for fighting and mating. Their bill shapes differ greatly from females to aid in competition.
#Evolution2
5 Dec 2025
Navigation brain cells in retrosplenial cortex preserved across evolution
Researchers found two special neuron types in the retrosplenial cortex that help navigation. These cells are conserved between mice and rats, linked to spatial disorientation in Alzheimer’s, and are now being studied in humans.
Photo by Matthew Mejia, Unsplash
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