reduction of "disease, disability and premature deaths from chronic noncommunicable diseases, mental disorders, violence and injuries, and visual impairment which are collectively responsible for almost 71% of all deaths worldwide". The Division of Noncommunicable Diseases for Promoting Health through the Reproductive Health has published the magazine, Entre Nous, across Europe since 1983. WHO is mandated under two of the international drug control conventions (Single Convention on Narcotic Drugs, 1961 and Convention on Psychotropic Substances, 1971) to carry out scientific assessments of substances for international drug control. Through the WHO Expert Committee on Drug Dependence (ECDD), it can recommend changes to scheduling of substances to the United Nations Commission on Narcotic Drugs. The ECDD is in charge of evaluating "the impact of psychoactive substances on public health" and "their dependence producing properties and potential harm to health, as well as considering their potential medical benefits and therapeutic applications." Environmental health The WHO estimates that 12.6 million people died as a result of living or working in an unhealthy environment in 2012 – this accounts for nearly 1 in 4 of total global deaths. Environmental risk factors, such as air, water, and soil pollution, chemical exposures, climate change, and ultraviolet radiation, contribute to more than 100 diseases and injuries. This can result in a number of pollution-related diseases. 2018 (30 October – 1 November) : 1 WHO's first global conference on air pollution and health (Improving air quality, combatting climate change – saving lives) ; organized in collaboration with UN Environment, World Meteorological Organization (WMO), and the secretariat of the UN Framework Convention on Climate Change (UNFCCC) Life course and life style WHO works to "reduce morbidity and mortality and improve health during key stages of life, including pregnancy, childbirth, the neonatal period, childhood and adolescence, and improve sexual and reproductive health and promote active and healthy aging for all individuals". It also tries to prevent or reduce risk factors for "health conditions associated with use of tobacco, alcohol, drugs and other psychoactive substances, unhealthy diets and physical inactivity and unsafe sex". The WHO works to improve nutrition, food safety and food security and to ensure this has a positive effect on public health and sustainable development. In April 2019, the WHO released new recommendations stating that children between the ages of two and five should spend no more than one hour per day engaging in sedentary behaviour in front of a