The No Child Left Behind Act attracted criticism from the left in Congress.
 There exist several international instruments for these purposes, such as:Worst Forms of Child Labour ConventionMinimum Age Convention, 1973Optional Protocol on the Sale of Children, Child Prostitution and Child PornographyCouncil of Europe Convention on the Protection of Children against Sexual Exploitation and Sexual AbuseOptional Protocol on the Involvement of Children in Armed ConflictHague Adoption Convention=== Climate change ===== Health ===== Child mortality ===During the early 17th century in England, about two-thirds of all children died before the age of four
6 million under-five infants died worldwide in 1990, which declined to 6

