Chen Rong has managed to save five little girls she's found. "Innocent children are being killed," she says, "because they are girls, not boys." Boys More Valued Historically, Chinese culture has valued male children over females, especially in rural areas, where peasants want boys to help in the fields. Today, as ultrasound machines have become readily available, China has seen an epidemic of sex-selection abortions — so many, that the ratio of males to females in parts of China has been thrown wildly out of kilter. For every 100 girls born here, there used to be about 105 boys. Now,...