90 seconds: 4 stories you can't miss

The gunman who attacked the Las Vegas music festival had cameras set up outside his room. Trump visited Puerto Rico on Tuesday, after Hurricane Maria swept through the island two weeks ago. Three billion Yahoo accounts were affected by a massive data breach — three times as many as initially reported. The Nobel Prize in Chemistry was awarded to three researchers for their work on electron microscopy.

Credits: EPA, Getty, Hillary Guzik, KTLA, Sarya Stukes

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