Updated at 12:20 p.m. ET

Jair Bolsonaro has tested positive for the coronavirus.

The Brazilian president, who has consistently downplayed the dangers of the virus, revealed his positive test result during nationally televised remarks Tuesday. "It came back positive," he told reporters from behind a mask.

Atlanta Mayor Keisha Lance Bottoms has tested positive for the coronavirus but said Tuesday that her only possible symptom is a headache.

On Feb. 9, 1950, Joseph McCarthy, a junior senator from Wisconsin, stunned the nation — and stoked the paranoia of the Cold War — when he alleged that there were 205 spies working within the U.S. State Department. It was the beginning of a four-year anti-Communist, anti-gay crusade, in which McCarthy would charge military leaders, diplomats, teachers and professors with being traitors.

The coronavirus pandemic has posed a special challenge for scientists: Figuring out how to make sense of a flood of scientific papers from labs and scientists unfamiliar to them.

More than 6,000 coronavirus-related preprints from researchers around the world have been posted since the pandemic began, without the usual peer review as a quality check. Some are poor quality, while others, including papers from China from early in the course of the epidemic, contain vital information.

The beauty of science is the facts are supposed to speak for themselves.

It's become known as the Old Town melee. Protesters gathered last month in Albuquerque, N.M., around the bronze statue of Juan de Oñate, the controversial Spanish conquistador, in the city's historic quarter.

Videos of the event show men with guns — in military garb and tactical gear — stationed around the statue, tussling with protesters. Soon, the protesters bring out a chain and pickax to topple the figure, as police watch from afar.