For lack of a few pinches of ordinary iodised table salt in the diet of a third world pregnant mother, a child can lose up to ten IQ (Intelligence Quotient) points.
In the same way that slavery was a moral challenge for the 19th century and totalitarianism was a challenge for the 20th century, the challenge that women and girls face around the world is the moral challenge of our time.
It's no accident that the countries that have enjoyed an economic take off have been those that educated girls and then gave them the autonomy to move to the cities to find work