Little girls are gentle, boys are rough.

According to UN statistics, women do 67% of the world’s work, yet their earnings amount only 10% of the world’s income.

In the rural areas, women are paid lower than the wage for men.

Women can breast-feed babies, men can bottle feed babies.

Most-building site workers in the Philippines are men.

In Ancient Egypt, men stayed at home and did weaving.

Men’s voice break at puberty, women’s do not

In one study of 224 cultures, there were 5 in which men did all the cooking and 36 in which women did all the house building.

In one documented case, a child who was brought up as a girl, then learned that he was actually a boy, his school marks improved dramatically.