Nuclear reactors exist across the globe, found from China to the United States and in between. But where, exactly, are they located? Developed by the International Atomic Energy Agency (IAEA) and maintained for the past 50 years, the Power Reactor Information System (PRIS) is a database that provides an overview of "power reactors in operation, under construction, or those being decommissioned." On the page linked above, users will find an interactive map showing the physical locations of nuclear reactors and world and country-specific statistics on the ages of reactors, the power-generating capacity of these reactors, the regional distribution of nuclear power capacity, and other information. Visitors can navigate to these using the "World Statistics" and "Country Statistics" tabs in the menu at the top of the page. PRIS also releases several publications, which can be found by clicking the "Publications" tab. A "Glossary" is also available that defines key terms for readers who are unfamiliar with nuclear energy terminology. These features make PRIS useful for professional scientists and amateur readers who wish to explore nuclear energy and its standards of practice, recent developments, and future state.