Spotted hyena clans flip the script on mammalian power: here, dominance is inherited, alliances matter most and females rule every level of society.

Men have nipples, mammary glands and the hormones required, but the ability for male lactation rarely turns on. Here’s why ...

My colleague and I have published a new study of cactus flowers which may help explain the conundrum. For more than a century ...

Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

For decades, many evolutionary biologists argued that natural selection acts primarily on individuals. In other words, that organisms are rewarded or penalized one at a time, and that the idea of ...

Forget Survival Of The Fittest. Humans Conquered Our Planet By Sharing Ideas. In A Nutshell Humans spread across nearly every habitat on Earth in around 300,000 years, a feat that biology alone would ...

Researchers uncovered millions of ancient plant DNA switches—some older than flowering plants themselves—revealing a hidden evolutionary blueprint stretching back 400 million years. Most people have ...

Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic ...

In honor of Darwin Day Feb. 12, CU Boulder evolutionary biologist Daniel Medeiros explains what we get right and wrong about Darwinism For evolutionary biologists, the big day is imminent. No, not ...

Why does a Caribbean angelfish sometimes resemble its Indo-Pacific cousin, even though they have never lived in the same ocean? Why do coral reefs harbor such a wide range of stripes, spots and ...

Evolutionary biologists study the changes that occur in plants, animals, and microbes over time and within current populations. When addressing a virus outbreak (like COVID-19), scientists in this ...