By Nafeesa Syeed Associated Press DISTRICT HEIGHTS, Md. -- The pilot of a medical helicopter twice radioed for help in foggy weather before crashing Sunday, killing four of the five people on board in the latest of a growing number of air ambulance accidents, authorities said.

By Paul Rogers SAN FRANCISCO -- Vowing to make public all the facts behind a Nov.

By Michelle Ku, The Lexington Herald-Leader, Ky. Nov.

WASHINGTON _ The National Transportation Safety Board determined on Thursday that the probable cause of the crash of Comair Flight 5191 was a series of errors by the plane's flight crew.

A fourth high school student has died from injuries she got when a school bus nose-dived off an interstate overpass, the police chief said Tuesday.