Scientists trace the origins of human kissing back over 20 million years to ancient apes who first showed gentle ...

A groundbreaking study has traced the 66-million-year evolutionary history of primates and overturned conventional thought that our ancestors originally inhabited warm tropical forests. Using advanced ...

Primates - the group of animals that includes monkeys, apes and humans - first evolved in cold, seasonal climates around 66 million years ago, not in the warm tropical forests scientists previously ...

A new study shows that saliva has been evolving quickly, especially in primates, through gene duplications, losses, and ...