Scientists have worked out what is going on inside a dog's brain when it sees a human smiling or scowling.
Humans have become one of the world's greatest evolutionary forces. To survive our cities, animals from urban foxes to glass-climbing lizards are responding with extreme adaptation.
All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without males, revealing new clues to how genomes stay healthy.
The fossilised bones of our ancestors remain silent. So, how can we possibly imagine what our earliest languages sounded like?
Becca Johns looks at the evolution of our relationship with canines.
A new study looks at how the mouth-on-mouth smooch came into being, and concludes that Neanderthals also kissed.
Although the chemistry of autumn colours is well understood, there is an ongoing debate among scientists about why trees evolved their vivid autumn colours in the first place.
'Crabs' are a collection of decapods that have evolved over millions of years to look the same.
The bald, subterranean rats are the world's longest-lived rodent.
