Colorado's series of shootings may hold answers to America's gun problem. Plus, the surprising success of the vaccine rollout.

Read today's top stories from NBC News.

March 24, 2021 How the vaccine rollout overcame doubts to be a point of pride By David Ingram Despite the challenges that remain, the rollout of the vaccines has gone far better than many Americans feared it would in late December, when state and local officials seemed unable to get doses off the shelves. The success stands as a possible morale boost for a country of people who wondered last year whether their government was still capable of accomplishing ambitious projects. Read more Why does this keep happening? Colorado's notorious mass shootings may hold answers By Alicia Victoria Lozano | Read more Parts of the art world are calling out the ecological impacts of crypto art By Melanie Ehrenkranz | Read more Capitol rioters' Trump donations show how much they bought into his election fraud lie By Allan Smith | Read more Biden tasks Harris with 'stemming the migration' on southern border By Lauren Egan, Gabe Gutierrez and Dareh Gregorian | Read more OPINION Trillions in Covid relief and infrastructure spending means we'll all pay later By James Pethokoukis | Read more Mystery drones hovered over Navy destroyers off California, report says By Dan De Luce | Read more Facebook says Chinese hackers used platform to hack Uyghurs abroad By Kevin Collier | Read more Tornado forecast: La Niña year could bring supercharged season By Denise Chow and Kathryn Prociv | Read more Virginia becomes first Southern state to abolish death penalty as governor signs new law By Amanda Golden and Geoff Bennett | Read more Get the NBC News Mobile App Follow NBC News This email was sent by: NBC News 30 Rockefeller Plaza New York, NY 10112   This is an automated email. Do not reply directly to this email. Privacy | Unsubscribe | More NBC Newsletters | Contact View in browser