DOJ launches an investigation into Memphis and the city’s police department The Justice Department said its investigation will focus on the Memphis Police Department’s use of force, its stops and arrests and whether the department engages in discriminatory policing. Read more on NPR

Why it’s so important to figure out when a vital Atlantic Ocean current might collapse Scientists know a current in the Atlantic ocean could collapse suddenly as the climate changes. The question of when matters to billions of people around the globe. Read more on NPR

Tornado damage to Pfizer factory highlights vulnerabilities of drug supply A tornado that ripped through a Pfizer plant in Rocky Mount, N.C., raised worries about shortages of medicines used in hospitals. The drugs include commonly used painkillers and anesthetics. Read more on NPR

New study shows just how Facebook’s algorithm shapes conservative and liberal bubbles Research conducted at the height of the 2020 election reveals new details about how Facebook’s algorithms handle political content. But it suggests there are no easy fixes to political polarization. Read more on NPR

‘Into the Bright Sunshine’ spotlights the achievements of LBJ VP Hubert Humphrey Humphrey is remembered for his defense of an unpopular war in Vietnam, but author Sam Freedman says the former mayor of Minneapolis played a critical role in getting Democrats to embrace civil rights. Read more on NPR