Heathrow Airport closed March 21 due to a fire at a nearby electrical substation. Power outages impacted 100,000 homes, with around 4,000 still without power. Read the full story here CDC warns of ...

President Trump left the summit in Canada as the Israeli-Iranian conflict entered a fifth day. He had resisted signing an earlier draft of the G7 statement. Follow live coverage of the conflict ...

David Muir on how 'World News Tonight' viewers are helping families this Thanksgiving As nonprofits across America help feed those in need over the Thanksgiving holiday, World News Tonight viewers ...