States parties undertake to combat disease and malnutrition "through the provision of adequate nutritious foods and clean drinking water, taking into consideration the dangers and risks of environmental pollution." It binds States parties to make "available and accessible to every child" compulsory and free primary education and options for secondary schooling, including vocational education (Article 28). It also obliges States parties to "encourage the provision of appropriate and equal opportunities for cultural, artistic, recreational and leisure activity" (Article 31).