Aircraft checklists have evolved from simple to complex, underscoring the vital role of "checklist discipline" in aviation safety. An F-4 crew member's failure to complete a "before power applied" ...

Several months ago, police say, Cheryl A. Laing, 45, and Jessica Gullickson, 24, both of Broomall in Delaware County, were working overtime at a dentist’s office on Old Lancaster Avenue in Bryn Mawr.

Kids don't come with manuals. But plenty of books have been written to help struggling parents with the variety of challenges that come their way. Psychiatrist Dr. Robin Berman's book Permission to ...