provide relief in times of calamity. Missionary outreach of the Seventh-day Adventist Church is aimed not only at non-Christians but also at Christians from other denominations. Adventists believe that Christ has called his followers in the Great Commission to reach the whole world. Adventists are cautious, however, to ensure that evangelism does not impede or intrude on the basic rights of the individual. Religious liberty is a stance that the Adventist Church supports and promotes. Education Globally, the Adventist Church operates 7,598 schools, colleges and universities, with a total enrollment of more than 1,545,000 and a total teaching staff of approximately 80,000. It operates the second largest school system in the world, only larger is the Roman Catholic Church school system. Health Their largest medical school and hospital in North America is Loma Linda University and Loma Linda University Medical Center. Throughout the world the Seventh-day Adventist Church, runs a wide network of hospitals, clinics, lifestyle centers, and sanitariums. These play a role in the church's health message and worldwide missions outreach. Their largest medical school and hospital in North America is Loma Linda University and Loma Linda University Medical Center. AdventHealth is the largest not-for-profit Protestant health care provider in the United States. It is sponsored by the Seventh-day Adventist Church and cares for over 5 million patients yearly. Humanitarian aid and the environment For over 50 years, the church has been active in humanitarian aid through the work of the Adventist Development and Relief Agency (ADRA). ADRA works as a non-sectarian relief agency in 125 countries and areas of the world. ADRA has been granted General Consultative Status by the United Nations Economic and Social Council. Worldwide, ADRA employs over 4,000 people to help provide relief in crises as well as development in situations of poverty. The church embraces an official commitment to the protection and care of the environment as well as taking action to avoid the dangers of climate change: "Seventh-day Adventism advocates a simple, wholesome lifestyle, where people do not step on the treadmill of unbridled over-consumption, accumulation of goods, and production of waste. A reformation of lifestyle is called for, based on respect for nature, restraint in the use of the world's resources, reevaluation of one's needs, and reaffirmation of the dignity of created life." Media Adventists have long been proponents of media-based ministries. Traditional Adventist evangelistic efforts consisted of street missions and the