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Northwestern University says these are the world's smallest human-made flying structures, and they could be used for monitoring the environment, population surveillance or disease tracking.

The symptoms, such as headache, fatigue and cognitive dysfunction, persist or recur months after diagnosis, far more often than they do for the flu, researchers say.

Treasury Secretary Janet Yellen tells CNN she was wrong about the trajectory of inflation during interviews a year ago.

Pennsylvania has an open Senate seat for the first time in 12 years. While the Democratic race was easily decided, the Republican primary looked like it's headed for a recount.

Women in Afghanistan continue to experience more restrictions under the Taliban, including the return of the burqa. NPR's Scott Simon notes how the world seems to be distracted from their plight.

Baseball superstar and Japan native Shohei Ohtani is coming to Milwaukee for a three-game series.

"We wanted to help others," a survivor tells Reuters. "There was nothing we could do." The victims were mostly children whose escape was blocked.

Researchers said they located a German U-boat that went "on the run" from British forces as the war ended. The discovery ends speculation that Adolf Hitler used it to escape to South America.

The exodus of Venezuelans, trying to escape food and medicine shortages, has been called "one of Latin America's largest mass-population movements in history."

In his only Wisconsin stop before the midterm elections, President Donald Trump rallied thousands of supporters in Mosinee on Wednesday. He urged them all…