A few people have mutations in a gene called FOXP2. As a result they struggle to grasp grammar and pronounce words. That suggests FOXP2 is crucial for learning and using language. The modern FOXP2 evolved in the common ancestor of humans and Neanderthals: Neanderthal FOXP2 looks just like ours.
The Aztecs used to sacrifice butterflies to their god Quetzalcoatl.
The first clear real traces of fellatio are from ancient Egypt. Many of the more stellar examples are in the British Museum, where we find the famous myth of Osiris and Iris: Osiris was killed by his brother and cut into pieces. His sister Iris put the pieces together but, by chance, the penis was missing. An artificial penis was made out of clay, and Iris ‘blew’ life back into Osiris by sucking it. There are explicit images of this myth. As an aside, Egyptian women were particularly well known for their sexual prowess, and also purported to be the first women to use make-up.
Traditionally, the king of hearts is the only king without a moustache.
Up until about 47,000 years ago, modern humans and Neanderthals likely interbred. However, research suggests that these liaisons only occasionally resulted in offspring.