An Australian reptile delivered the same litter both in eggs and live birth, suggesting to researchers that an evolutionary shift could be happening before our eyes.
Some 555 million years ago, this worm-like animal with a mouth and butt tunneled through the seafloor, originating the body plan that gave rise to humans and most other animals.
The finding deepens our understanding of how modern life originated on Earth and shows there’s a lot we still don’t know about our planet’s history.
The study of genitals has historically ignored female parts. Now that that's changing, it's revealing an evolutionary competition between penis and vagina.
Species that aren't closely related can look identical thanks to a bizarre trick of evolution. A new study reveals part of the mechanism for creating nature's unrelated twins.
By deforming their beaks, an introduced parasite is causing two finch species to hybridise, changing the course of their evolution.
"We know of no other example in rails, or of birds in general, that demonstrates this phenomenon so evidently.”
There are six categories of things that most people find disgusting.
A few small lifestyle tweaks can make the shift easier for aspiring early risers.
As uncomfortable as the thought may be, traits that assist in reproduction tend to get passed on.
It's the word "still" that makes it poignant.
It's a new theory on the evolution of the human brain.