HumansKissing may have evolved in an ape ancestor 21 million years ago Rather than being a recent cultural development, kissing may have been practised by other early humans like Neanderthals and our ape ancestors News
HealthWe now know why a belly button becomes an 'innie' ¾«¶«´«Ã½s have discovered a new abdominal structure called the umbilical sheath, which anchors the remnant of the umbilical cord to deep abdominal tissues and helps determine the shape of your navel News