World News Tonight with David Muir World News Tonight

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David Muir

World News Tonight Reports

New clues on why women's Alzheimer's risk differs from men's

New research gives some biological clues to why women may be more likely than men to develop Alzheimer's disease and how this most common form of dementia varies by sex
Jul 16

What awaited the astronauts when they returned to Earth after Apollo 11 moon landing?

The trio were quarantined to protect Earth from any germs picked up on the moon.
1h ago

Amid protests, Puerto Rico governor says he will not resign

Ricardo Rossello insisted that he would not leave office despite the scandals.
3h ago

Man arrested in murder of community activist found dead in trunk of car: Police

Sadie Roberts-Johnson was found dead in the trunk of her car on Friday.
2h ago