During the H1N1 swine flu pandemic, President Barack Obama was vaccinated by a White House nurse. It took a little more than five months from the discovery of the virus to develop a vaccine. Pete Souza/AP hide caption

NASA mathematician Katherine Johnson, pictured at the 2017 Academy Awards, was one of the women profiled in the book and film Hidden Figures. She died Monday at 101. Jordan Strauss/Invision/AP hide caption

A crowd gathers at the South Bristol's annual ice harvest. Rebecca Conley/Maine Public hide caption

Andrew Downs, senior regional director for the southern region of the Appalachian Trail Conservancy, stands at the approximate spot where the pipeline would cross underground. Becky Sullivan/NPR hide caption

From vocal delivery to melodic hooks, from lyrics to production: Kevin Parker has elevated his craft on The Slow Rush. Matt Sav/Courtesy of the artist hide caption