Earliest interbreeding event between ancient human populations discovered
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The new study goes back further than 23andme could have ever imagined.
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The role of lizard lungs in evolutionary biology
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Savannah monitor lizards have a unique airflow pattern that is a hybrid of bird and mammal flow patterns.
Read MoreSex, lice and videotape
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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.
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