Kissing the ‘right’ way begins in the womb: “Two thirds of us instinctively tilt our heads to the right when we kiss, reveals a new study timed to coincide with Valentine’s Day. The 2:1 ratio matches our preference for using the right foot, eye and ear. The bias probably has its origins in our tendency to turn our heads to the right in the womb and for up to six months after birth, says the study’s author, Onur Güntürkün.” New Scientist