over 150 states in the un have independently recognized the right in some form through legislation, legal action, constitutional law, treaty law or other legal authority. the african charter on human and peoples' rights, american convention on human rights, escazu agreement, arab charter on human rights, and asean declaration on human rights each include a right to a healthy environment. there are other human rights frameworks such as the convention on the rights of the child. they refer to environmental issues as they relate to the framework's focus, in this case children's rights.