1. American Association for the Advancement of Science (AAAS): The AAAS is an international organization dedicated to advancing science, engineering, and innovation throughout the world. It publishes the journal Science and hosts conferences and events to promote scientific research and education. 2. National Institute of Health (NIH): The NIH is a part of the U.S. Department of Health and Human Services and is the nation's medical research agency. It funds and conducts medical research across a wide range of fields, from cancer and infectious diseases to mental health and genetics. 3. European Organization for Nuclear Research (CERN): CERN is a European research organization that operates the largest particle physics laboratory in the world. It is best known for the Large Hadron Collider, a particle accelerator that has made significant breakthroughs in the field of particle physics. 4. National Aeronautics and Space Administration (NASA): NASA is the United States government agency responsible for the nation's civilian space program and for aeronautics and aerospace research. It conducts research and exploration missions in space, including sending astronauts to the International Space Station and conducting robotic missions to other planets. 5. World Health Organization (WHO): The WHO is a specialized agency of the United Nations responsible for international public health. It coordinates efforts to improve global health, prevent and control diseases, and provide guidance and support to countries in healthcare policies and practices.