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Tonight, a promising breakthrough, the first treatment shown to reduce coronavirus deaths.

Researchers call a common anti-inflammatory drug a game changer in the fight against COVID-19.

And what we saw was really quite remarkable.

Hitting pause from Miami to Las Vegas, the alarming data driving some cities to delay the next phase of reopening.

Previous use of force. New details tonight about the officer who shot Rashad Brooks. And the president

signs an executive order, encouraging police reforms. Murder charges. An Air Force Sergeant

is accused of killing a federal officer and ambushing sheriff's deputies.

What prosecutors are saying about his link to Boogaloo, the anti-police group.

Beijing on lockdown. China's capital shutting down schools, not letting anyone in or out of the city, as they scramble to trace hundreds

of thousands potentially exposed to the virus.

Explosion in diplomacy.

North Korea blows up a diplomatic building at the border.

Did the last hope for a nuclear deal go up in flames? Striking out, baseball's future is in serious doubt.

Will there be a season?

And finally, little solutions with a big impact.

How many libraries are feeding more than just the mine.

This is the CBS Evening News with Nora O'Donnell. than just the mind.

This is the CBS Evening News with Nora O'Donnell, reporting from the nation's capital.

Good evening and thank you for joining us.

We are going to begin with breaking news on what could be a breakthrough in the fight against coronavirus.

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