A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million years was due to their reproductive methods. Early animals reproduced by ...

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a ...

Evolution doesn't always create brighter colors or larger bodies—sometimes it favors darkness. Through a genetic trait known ...

Evolution is always happening — so why can't we see it? A biologist explains the timescale problem, election pressure, and ...

In most narratives, the story of evolution is the story of organisms emerging from the ocean and eventually populating the land. But for some species, that evolution also involved a return trip.

Click here to view Volume I of this Research TopicThe domestication of animals and plants during the early Holocene marked a pivotal transition that led to ...

Small really does seem to be beautiful in evolutionary terms. The largest dinosaurs, pterosaurs and mammals may look impressive but these giants are vastly outnumbered by microscopic bacteria and ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

Modeling shows that being able to make and break behavioural habits increases the survival chances of animals in the face of predation ...

In five cases where vertebrates evolved monogamy, the same changes in gene expression occurred each time. In many non-monogamous species, females provide all or most of the offspring care. In ...