Warning: This graphic requires JavaScript. Please enable JavaScript for the best experience. Since 2006, guns have been used in an average of 25 mass killings per ...

This database originally covered cases from 1982 to 2012 and has since been updated and expanded numerous times. For analysis and context on this data—including how we built the database, and a change ...

Pew Research Center is made up of intellectually curious people from across many fields, places and backgrounds. For decades, our expertise, best-in-class methods and commitment to high-quality, ...

AWI is excited to announce the 25 th anniversary relaunch of our Refinement Database, which has been updated and modernized and can now be accessed via a brand-new website: refinementdatabase.org.