HealthWomen's pelvises are shrinking – how is that changing childbirth? Over the past 150 years, the rise in Caesarean sections and changes in diet could have led to smaller pelvises among women – which may make vaginal birth more difficult but could also reduce common conditions associated with childbirth ¿ìè¶ÌÊÓÆµ
HumansAncient humans evolved to be better teachers as technology advanced As our ancestors developed more advanced tools and cultural practices, they also developed new ways of explaining concepts to others – culminating in the emergence of complex language ¿ìè¶ÌÊÓÆµ