Pregnancy and childbirth have become a ¡°new fault line in the global climate crisis¡± as extreme heat worsens, the head of the Ä¢¹½ÊÓÆµ climate action body (Ä¢¹½ÊÓÆµFCCC) warned on Monday, calling for maternal and newborn health to be built into countries¡¯ climate plans.