Extremes of the colour gradient of the Eastern San Antonio frog (Hyla orientalis). On the left, a specimen captured in Chernobyl inside the high contamination zone; on the right, a specimen captured outside the Exclusion Zone.
Germán Orizaola/Pablo Burraco
Research on Chernobyl frogs has shown that the ionising radiation caused by the accident triggered a process of natural selection among these animals.
The white-necked jacobin (Florisuga mellivora) is a medium-size hummingbird
Narwhals, hummingbirds and the Asian sheepshead wrasse have opened scientists’ eyes to the complexity of nature.
Hossein Anv / Unsplash
The teeth of the tammar wallaby don’t grow in the way you’d expect – and scientists want to know why.
Neanderthal adult male, based on 40,000 year-old remains found at Spy in Belgium.
You may have heard science has reconsidered its view of Neanderthals but did you know human hybrid species played a key role in our evolution?
Many hunter gatherers have a long history of egalitarianism.
Not all human societies throughout history have been patriarchal.
The gut microbiome may also play a role in personalized medicine.
nopparit/iStock via Getty Images Plus
As early modern humans spread across the globe, their gut microbes genetically changed with them. Understanding the origins of gut microbes could improve understanding of their role in human health.
An artist’s impression of the
Palaeontologists studied Pantolambda fossils in forensic detail to learn about its lifestyle.
The sun’s rays often feel good on your skin, but can cause serious damage.
Maksim Chernyshev/EyeEm via Getty Images
Our ancient ancestors didn’t have clothes or houses – but that constant exposure to the sun helped their skin protect itself from the worst sun damage.
Axolotls are a model organism researchers use to study a variety of topics in biology.
Axolotls are amphibians known for their ability to regrow their organs, including their brains. New research clarifies their regeneration process.
The majority of fertilized eggs die and are resorbed into the body.
Human embryos are far more likely to die than come to term, an evolutionary trait seen across species. Laws granting personhood at conception ignore built-in embryo loss, with potentially grave consequences.
The most controversial feature of the New Zealand flora is the plethora of small-leaved trees and shrubs with wiry interlaced branches. Can a synthesis of competing explanations solve this mystery?
Slime plays an essential role in the lives of snails, hagfish and people alike.
Adrienne Bresnahan/Moment via Getty Images
A vast array of species, including people, use slime for a variety of essential bodily functions. Studying the genetic ancestry of slime surprisingly showcases the role of repetitive DNA in evolution.
Hopefully, the pepperoni won’t get too jealous over its disc-shaped competitor’s moment in the sun.
Ryzhkov/iStock via Getty Images Plus
The pickle-obsessed can now order a pickle pizza with a side of pickle potato chips, wash it down with a pickle beer and have pickle ice cream for dessert.
Artwork in the Djourab desert, Chad, gives a taste of how our oldest ancestors got around.
Sabine Riffaut, Guillaume Daver, Franck Guy / Palevoprim / CNRS – Université de Poitiers / MPFT
New research shows our oldest ancestors were able to walk as well as evolve in trees.
Nam Anh / Unsplash
A new theory linking metabolism and size shows how evolution, not physics, is the driving force behind many of life’s patterns.
Humans are the only animals that express their thoughts in full sentences.
Oliver Rossi/DigitalVision via Getty Images
A language scientist explains that talking was never invented but has evolved over hundreds of thousands of years.
James Lovelock outside his home laboratory.
Homer Sykes/Alamy Stock Photo
Lovelock’s Gaia hypothesis suggested that Earth could be considered a single, self-regulating organism.
A rare find — a fossil of
Stanleycaris hirpex with the nervous system preserved.
(Jean Bernard Caron/Royal Ontario Museum)
The discovery of a fossil over 500 million years old reveals new information. Its brain and nervous system are remarkably preserved, filling in some gaps in what we know about arthropod evolution.
A great hammerhead shark’s two eyes can be 3 feet apart on opposite sides of its skull.
Ken Kiefer 2/Image Source via Getty Images
The first hammerhead shark was likely the result of a genetic deformity. A biologist explains how shark DNA reveals hammerheads’ history.
Tritylodon, a therapsid, reconstructed as a night dwelling warm blooded animal. Note the steam coming out of its lungs.
Illustrated by Luzia Soares
Warm-bloodedness is the key to what makes mammals what they are today. That’s why working out when it emerged in mammal ancestors matters.