evolution

Ribs evolved for movement first, then co-opted for breathing

A major transformation in vertebrate evolution was when breathing shifted from the head to the torso in reptiles. But what caused the shift? A study hypothesizes it was driven by locomotion.


Columns and rows of microscope slides, yellowed with age, containing male and female pairs of lice with descriptions of species, genes, location found, host and more info on their labels.

Discover parasite biodiversity from home

Millions of specimens are sitting in museums all over the world, but a lack of digital records make them hard to find and study. Help biologists discover parasite biodiversity.


Earliest interbreeding event between ancient human populations discovered

The new study goes back further than 23andme could have ever imagined.


The role of lizard lungs in evolutionary biology

Savannah monitor lizards have a unique airflow pattern that is a hybrid of bird and mammal flow patterns.


Sex, lice and videotape

Biologists drove the divergence of different-sized feather lice from a single population. In four years the evolved lice had trouble mating with each other, a sign of speciation and they caught it on tape.