HealthWe now know why a belly button becomes an 'innie' ¿ìè¶ÌÊÓÆµs 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 ¿ìè¶ÌÊÓÆµ
HumansHomo naledi's burial practices could change what it means to be human If ancient humans with brains a third the size of our own buried their dead, as some archaeologists are claiming, then our species may be less special than we thought Leader