Charles Gibson was named sole anchor of ABC World News Tonight, after its original host resigned from the program.
Gibson was a host of Good Morning America from 1987 to 2006, and the anchor of World News with Charles Gibson from 2006 to 2009. On May 29, 2006, Gibson was named sole anchor of World News Tonight, effective May 23, 2006, after Vargas announced her resignation from the program. 
