The ABC World News Tonight anchor delivered devastating breaking news on Tuesday about MIT professor Nuno F.G. Loureiro, ...

Viewers of ABC's World News Tonight have fumed that they "just don't understand" after David Muir shared an upsetting update ...

During the latest broadcast of ABC's World News Tonight, anchor David Muir shared the latest update on a 'gruesome mystery' ...

David halted the show to announce, "Tonight, outside Boston, police are investigating the deadly shooting of an MIT professor ...

David Muir’s World News Tonight was forced to interrupt its regular broadcast on Saturday, December 13, as news broke out ...

It was an emotional episode for ABC World News Tonight viewers as David Muir halted the show for a heartbreaking news update.

David Muir and his colleague Whit Johnson reported on last weekend's mass shooting at Brown University in Providence, Rhode ...

David Muir was in the middle of reporting on a huge update on ABC World News Tonight when he was forced to make a U-turn as a breaking headline cropped up live on air ...

Viewers shared their upset after the news announcement was made on ABC World News Tonight. Whit Johnson had stepped in for ...

Linsey Davis stepped in for David Muir as she shared an update on the tragic Bondi Beach shooting. Two gunmen killed 15 ...

For the fifth year running, Oprah Winfrey is sharing her favorite American-made gift ideas on "World News Tonight with David ...

For the 14th year running, ABC News' "World News Tonight" is spotlighting small businesses across the country that make and ...