Passengers head for security screening at George Bush Intercontinental Airport in Houston last year. David J. Phillip/AP hide caption

"The Paper Kingdom," Papa said. "Didn't we tell you before? This is the land of the Paper King!" Pascal Campion/Random House Books for Young Readers hide caption

Ballaké Sissoko, Driss El Maloumi and Rajery are masters of three different stringed instruments from three different African cultures. Together, they are a trio called 3MA. Cyrille Choupas /Courtesy of the artist hide caption

National Guard personnel stand beside a line of motorists waiting for coronavirus testing in New Rochelle, N.Y., on Friday. Major retailers such as CVS, Target and Walmart are pledging to set up drive- through test sites in some of their parking lots. John Minchillo/AP hide caption

Cat Lutz (far left) in her lab at the Jackson Laboratory Mouse Repository. Aaron Boothroyd/The Jackson Laboratory hide caption

Ventilators can be a temporary bridge to recovery — many patients in critical care who need them for help breathing get better. Taechit Taechamanodom/Getty Images hide caption

Jonah Mutono is one of the 100 artists on this year's edition of The Austin 100. Though SXSW was canceled, you can still discover and support the up-and-coming musicians who would have performed. Forest Aragon/Courtesy of the artist hide caption