In Chicago, some students who walked out of class on Wednesday added extra time to their tribute — 17 minutes for the individuals killed in Florida, plus three minutes more for other victims of gun violence in Chicago, including a police commander.
Secretary of Defense Jim Mattis is traveling in the Middle East after a two-day trip to Afghanistan. NPR's David Welna is traveling with Mattis and talks with NPR's Ari Shapiro about the Trump Administration's goals to end the war there.
Chris Flink is executive director of the Exploratorium in San Francisco, otherwise known as the birthplace of Pi Day. He speaks about the importance of the holiday that celebrates the ratio of a circle's diameter to circumference.