From the Economist
...The destruction of baby girls is a product of three forces: the ancient preference for sons; a modern desire for smaller families; and ultrasound scanning and other technologies that identify the sex of a fetus. In societies where four or six children were common, a boy would almost certainly come along eventually; son preference did not need to exist at the expense of daughters. But now couples want two children—or, as in China, are allowed only one—they will sacrifice unborn daughters to their pursuit of a son. That is why sex ratios are most distorted in the modern, open parts of China and India. ....
It is no exaggeration to call this gendercide. Women are missing in their millions—aborted, killed, neglected to death. In 1990 an Indian economist, Amartya Sen, put the number at 100m; the toll is higher now.
...All countries need to raise the value of girls. They should encourage female education; abolish laws and customs that prevent daughters inheriting property; make examples of hospitals and clinics with impossible sex ratios; get women engaged in public life—using everything from television newsreaders to women traffic police. Mao Zedong said “women hold up half the sky.” The world needs to do more to prevent a gendercide that will have the sky crashing down.