Top Stories: Las Vegas Shooting; Nobel Prize In Medicine Awarded

Good morning, here are our early stories:-- More Than 50 People Are Dead After A Mass Shooting On Las Vegas Strip.-- Nobel Prize In Medicine Is Awarded To 3 Americans For Work On Circadian Rhythm.-- Millions In Puerto Rico Still Lack Food, Clean Water Or Electricity.And here are more early headlines:Ex-Equifax Chief Apologizes For Security Breach. (Bloomberg)Catalonia Officials Say Independence Referendum Approved. (CNBC)Deadly Violence In Cameroon As English Speakers Seek Independence. (Guardian)Facebook To Turn Over Russia-Linked Ads To Congress. (Washington Post)2 Plead Not Guilty In Murder Of North Korea Leader's Half Brother. (BBC)Trial Of Alleged N.Y. Bomber Opens Today. (New York Times) Copyright 2017 NPR. To see more, visit http://www.npr.org/.