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A brain network for social attraction

How does an animal's brain recognize other animals of its own kind? Scientists studying this process in young zebrafish have now discovered a neuronal circuit that mediates social attraction. This specialized pathway, which runs from the retina deep into the brain, enables zebrafish to detect and approach nearby conspecifics.

New stem cell mechanism in your gut

Stem cells are a hot topic for creating medical treatments. However, scientists still do not fully understand how they choose to divide or differentiate to renew organs. Researchers have now found a new biophysical mechanism that regulates stem cells in the intestines of mice. There, a stem cell is not...