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New research found that wearing a cloth mask over a medical mask significantly boosts protection against droplets that can transmit the virus. Knotting the ear loops of surgical masks also helps.

President Biden is set to give his first address to a foreign — yet familiar — audience at the virtual Munich Security Conference on Friday.

As she takes the helm of the World Trade Organization, the former Nigerian finance minister faces challenges from COVID-19 response to navigating trade frictions between the U.S. and China.

"We need to do something different," says Dr. LouAnn Woodward, who leads the University of Mississippi Medical Center. She says the state needs a mask mandate, but knows many people won't comply.

NPR's David Greene speaks with Rafael Velasquez, an aid worker with Mercy Corps, about the humanitarian crisis facing Beirut following a massive explosion.

Michael Caputo is taking a two-month leave of absence after a social media outburst alleging an unfounded "deep state" conspiracy involving government scientists.

Arizona was heavily contested and Joe Biden has come out on top. In 2016, Trump won the state by four points. Democrats had been hopeful to make gains since they flipped a Senate seat there in 2018.

The EU says Amazon exploits data collected from other sellers for its own benefit. These are the first formal charges against the retail giant in a spate of antitrust probes in Europe and the U.S.

Former Vice President Joe Biden has a long history with Senate majority leader Mitch McConnell. What will that mean for President-Elect Biden's time in the White House?

Scientists are racing to better understand atmospheric rivers, bands of moisture that start in the tropics and can bring torrential rain to the U.S. They're projected to intensify with climate change.