Hardbound. In The Human Dichotomy, John Clarke discusses how the ratio between the numbers of males and females will change in the future.Scientific and technological advances, accompanied by social and economic change, are affecting the number of births, the number of deaths and the mobility of the two sexes, with the prospect of further dramatic changes in store. What impact will this have on the lot of women and girls world-wide? Will changes in the ratio of male to female births mean that the traditional son preference will begin to break down?Professor Clarke looks at how medical...