A man has been arrested in a woman's 1979 cold case murder after investigators used genetic genealogy to zero in on his identity, police in Maryland announced.

ABC News' late-night show "Nightline" marks its 45th anniversary with a special episode featuring all-new interviews with past and present anchors.

The Empire State Building's lights will be lit up in gold and cyan on Friday, to celebrate the 45th anniversary of ABC News' ...