Computer games have turned into an unmistakable type of diversion, charming players with their vivid universes, convincing stories, and imaginative interactivity.

We are indeed still evolving, though it can be hard to tell because it happens over generations and often involves things you can’t see, such as what foods different people are able to digest.

Four people hurt when an explosion ripped through a Pennsylvania nursing home two weeks ago sued the facility and a natural gas utility on Monday, claiming their negligence was to blame. Two workers at Bristol Health & Rehab Center LLC, a resident of the suburban Philadelphia facility and a contractor who happened to be there when the blast occurred on Dec. 23 filed the lawsuit. The defendants include PECO Energy Company, which provided natural gas to the complex, its parent company Exelon Cor