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Fed Chair Jerome Powell testifies before a House Financial Services Committee hearing in Washington on Dec. 2, 2020. The Fed issued new economic forecasts on Wednesday at the end of its two-day meeting. Jim Lo Scalzo/AP hide caption

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Jim Lo Scalzo/AP

Tourists arrive at Palma de Mallorca, Spain, last summer. The EU's executive arm has proposed a certificate to ease travel across its member states. Jaime Reina/AFP via Getty Images hide caption

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Jaime Reina/AFP via Getty Images

Nurse manager Lucy Golding draws up doses of the Moderna COVID-19 vaccine March 14 in Stamford, Conn. Moderna has begun enrolling infants and young children into a vaccine trial. John Moore/Getty Images hide caption

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John Moore/Getty Images

Vaccinating Children Seen As A Key Step Toward COVID-19 Herd Immunity

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Jun Wu's team at the University of Texas Southwestern Medical Center in Dallas have created hollow balls of cells that closely resemble embryos at the stage when they usually implant in the womb — known as blastocysts. The new laboratory-made embryo-like entities have been dubbed "blastoids." UT Southwestern Medical Center hide caption

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UT Southwestern Medical Center

Scientists Create Living Entities In The Lab That Closely Resemble Human Embryos

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Landlord Stephanie Graves walks to the main office at one of her properties in Houston with a resident. She's going door to door offering to help residents apply for rental assistance money approved by Congress that's just starting to flow to landlords and tenants. Stephanie Graves hide caption

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Stephanie Graves

Landlords Struggling To Stay Afloat See Lifeline In COVID-19 Relief For Renters

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Moderna is testing its COVID-19 vaccine in young children; its vaccine is currently authorized for people ages 18 and up. Here, third-grade children attend school this month in Berlin, as classes were allowed to meet in person at 50% capacity. Sean Gallup/Getty Images hide caption

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Sean Gallup/Getty Images

A majority of U.S. colleges have canceled spring break, in an attempt to curb student travel. But the rise of online classes means students can now attend college from anywhere, including Miami Beach. Elissa Nadworny/NPR hide caption

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Elissa Nadworny/NPR

The latest NPR/PBS NewsHour/Marist survey found that nearly half of former President Donald Trump's supporters said they would not get a COVID-19 vaccine if one becomes available to them. Mandel Ngan/AFP via Getty Images hide caption

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Mandel Ngan/AFP via Getty Images

OxyContin pills arranged at a pharmacy in Montpelier, Vt. Purdue Pharma makes the highly addictive drug. Toby Talbot/AP hide caption

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Toby Talbot/AP

Purdue Pharma Offers Restructuring Plan, Sackler Family Would Give Up Ownership

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Bamboo rats are among the wild animals farmed for food in China and other parts of Asia. A member of the World Health Organization team investigating the coronavirus pandemic says its report will conclude that such animal farms are likely the place where the pandemic began. Above, a live rat is on sale at a food market in Myanmar. Jerry Redfern/LightRocket via Getty Images hide caption

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Jerry Redfern/LightRocket via Getty Images

WHO Points To Wildlife Farms In Southern China As Likely Source Of Pandemic

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Two first grade students talk in the back of class at the Green Mountain School last month in Woodland, Wash. The CDC's current guidance for schools recommends seating or desks be "at least 6 feet apart when feasible." Nathan Howard/Getty Images hide caption

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Rohingya refugees at a work training center in Indonesia's Aceh province. Dr. Paul Spiegel of Johns Hopkins University's Center for Humanitarian Health is looking at the data that have been collected on refugees and other vulnerable populations. It's far from complete, he says, but he has been surprised by the impact of COVID-19 among Rohingya. Khalis Surry/Anadolu Agency via Getty Images hide caption

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Khalis Surry/Anadolu Agency via Getty Images

Friday marked the busiest day for the nation's airports since the start of the pandemic in March 2020. Above, a passenger wears a face mask as he waits for a Delta Airlines flight at Hartsfield-Jackson International Airport in Atlanta on Feb. 18, 2021. Charlie Riedel/AP hide caption

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Charlie Riedel/AP

Even with some colleges canceling their midsemester breaks due to COVID-19, students from more than 200 schools are expected to visit Miami Beach during spring break, which runs until mid-April. Eva Marie Uzcatequi/Bloomberg via Getty Images hide caption

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Eva Marie Uzcatequi/Bloomberg via Getty Images

Planning A Spring Break? These 5 Tips Can Help Minimize Risk

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Audrey (right) and Kelsey Ellis were twin sisters born March 17, 1991, in California. To celebrate their 29th birthday, they drove to Multnomah Falls, outside Portland, Ore. That evening, Audrey was incorrectly diagnosed with pneumonia. She died of multiple organ failure five days after. Kelsey Ellis hide caption

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Kelsey Ellis

A farmer in a pasture circa 1945 appears to get his cow cuddles for free. These days, it could cost him. Hulton Archive/Getty Images hide caption

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Hulton Archive/Getty Images

Opinion: The Comfort of Cow Cuddles

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