Paul Overberg is a data reporter at The Wall Street Journal, which he recently joined from USA TODAY. He often reports on demographic trends but has analyzed data about everything from mass killings to stream flows to highway pileups. He has taught data journalism at American University and is a frequent trainer and speaker for journalism groups, including Investigative Reporters and Editors/NICAR, the Reynolds Center for Business Journalism, Associated Press Media Editors and the Society for Professional Journalists.