Every morning, Rachel Canelli browses the Web site of the Bucks County Courier Times, a newspaper in suburban Philadelphia. She quickly picks out a cluster of stories from the day’s issue and puts them together in a Word document. A ...

Thanks to advancements in technology, just about anybody can take photos or video of major events and instantaneously distribute the images or footage around the world. The recent Boston Marathon bombings provided a vivid example; within minutes of the explosions, ...