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Hydroxychloroquine is used to treat autoimmune diseases like lupus and is being studied for use in treating and preventing COVID-19. GEORGE FREY/AFP via Getty Images hide caption

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GEORGE FREY/AFP via Getty Images

The first patient enrolled in Pfizer's COVID-19 coronavirus vaccine clinical trial at the University of Maryland School of Medicine in Baltimore, receives an injection in May. Pfizer's candidate for a coronavirus vaccine is one of number that are in various stages of development around the world. University of Maryland School of Medicine via AP hide caption

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University of Maryland School of Medicine via AP

NIH Director Hopes For At Least 1 Safe And Effective Vaccine By Year's End

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President Trump announced in May that he was taking hydroxychloroquine as a preventive measure against COVID-19. But a study published Wednesday finds no evidence the drug is protective in this way. GEORGE FREY/AFP via Getty Images hide caption

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GEORGE FREY/AFP via Getty Images

No Evidence Hydroxychloroquine Is Helpful In Preventing COVID-19, Study Finds

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The ancient Gondwana Rainforests of Australia were damaged by recent wildfires. A new study finds the world lost roughly one-third of its old growth forest in the past century. Nathan Rott/NPR hide caption

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Nathan Rott/NPR

Bilal Chaudhry, 16, picks up a dozen eggs to give to a person in a car during a free egg distribution in Cumru Township, PA. The distribution was held to help people during the COVID-19 outbreak. MediaNews Group via Getty Images hide caption

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MediaNews Group via Getty Images

Theory Vs. Reality: Why Our Economic Behavior Isn't Always Rational

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A pharmacy tech pours out pills of hydroxychloroquine May 20 at Rock Canyon Pharmacy in Provo, Utah. After a study found COVID-19 patients using the drug were dying at higher rates, the World Health Organization announced it would suspend its clinical trial. George Frey/AFP via Getty Images hide caption

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George Frey/AFP via Getty Images

A recent study found that black doctors were more effective than non-black doctors at convincing black men to use preventative health services. Angela Hsieh hide caption

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Angela Hsieh

Glacier mice in Iceland. Ruth Mottram hide caption

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Ruth Mottram

Herd Of Fuzzy Green 'Glacier Mice' Baffles Scientists

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"The two most replicated, robust factors linked to suicide are economic change — downturn — and social disconnection," says Dr. Roger McIntyre, professor of psychiatry at the University of Toronto. And both factors, he notes, are major hallmarks of the COVID-19 pandemic. Fanatic Studio/Gary Waters/Getty Images hide caption

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Fanatic Studio/Gary Waters/Getty Images

Act Now To Get Ahead Of A Mental Health Crisis, Specialists Advise U.S.

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It's not the pill. It's the doctor-patient relationship. Angela Hsieh/NPR hide caption

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Angela Hsieh/NPR

After testing positive for COVID-19, Diana Berrent established Survivor Corps, a grassroots clearinghouse for COVID-19 survivors interested in donating blood plasma to organizations developing therapies that might combat the disease. Diana Berrent/Survivor Corps hide caption

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Diana Berrent/Survivor Corps

The serious inflammatory syndrome sending some children and teens to the hospital remains extremely uncommon, doctors say. But if your child spikes a high, persistent fever, and has severe abdominal pain with vomiting that doesn't make them feel better, call your doctor as a precaution. Sally Anscombe/Getty Images hide caption

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Sally Anscombe/Getty Images

Mystery Inflammatory Syndrome In Kids And Teens Likely Linked To COVID-19

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Scientists with the European Southern Observatory say system HR 6819, seen in this artist's rendering, is composed primarily of two stars (orbits in blue) and a newly discovered black hole (orbit in red). The black hole is invisible, but it makes its presence known by the gravitational pull exerted on objects around it. ESO/L. Calçada hide caption

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ESO/L. Calçada
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A copy of the final edition of the Rocky Mountain News sits in a newspaper box on a street corner in Denver, Colorado. John Moore/Getty Images hide caption

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John Moore/Getty Images

Stop The Presses! Newspapers Affect Us, Often In Ways We Don't Realize

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An illustration shows spiky antigens studding the virus's outer coat. Tests under development that look for these antigens might be faster than PCR tests for diagnosing COVID-19, proponents say. But the tests might still need PCR-test confirmation. Sergii Iaremenko/Science Photo Library/Getty Images hide caption

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Sergii Iaremenko/Science Photo Library/Getty Images

A Next-Generation Coronavirus Test Raises Hopes And Concerns

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A project in San Francisco to estimate spread of the coronavirus in hard-hit neighborhoods has expanded testing to everyone over age 4 in a broad swath of the Mission District this week, including at a pop-up site at Garfield Square. Eric Westervelt/NPR hide caption

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Eric Westervelt/NPR

San Francisco Enlists A Key Latino Neighborhood In Coronavirus Testing

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A patient with COVID-19, who is on a ventilator in the isolation room at the National Koranyi Pulmonology Institute of Budapest. Karoly Arvai/AFP via Getty Images hide caption

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Karoly Arvai/AFP via Getty Images

A pathologist holds a vial from a COVID-19 test kit. Various bottlenecks in the U.S. that have constrained widespread testing for the coronavirus were problems in February and persist today. Michael Nagle/Bloomberg via Getty Images hide caption

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Michael Nagle/Bloomberg via Getty Images

Why The Warning That Coronavirus Was On The Move In U.S. Cities Came So Late

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Fissure 21 of the Kilauea volcano is seen on May 22, 2018, in the Leilani Estates subdivision of Pahoa, Hawaii. Ronit Fahl/AFP via Getty Images hide caption

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Ronit Fahl/AFP via Getty Images

Did Heavy Rain Cause Hawaii's Historic Volcanic Eruption?

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People stand in line as they wait to get tested for COVID-19 at a just-opened testing center in the Harlem section of New York on Monday. Seth Wenig/AP hide caption

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Seth Wenig/AP

Study Raises Questions About False Negatives From Quick COVID-19 Test

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