NPR's Ailsa Chang talks with Nancy Krieger, a social epidemiologist at Harvard University, about her efforts to preserve federal health data that recently disappeared from government websites.

NPR's Ari Shapiro speaks with Jorge Quijano, former Panama Canal administrator from 2012 to 2019. He disagrees with the Trump administration's assertions about Chinese influence over the Panama Canal.

In Ali Smith's latest novel, "Gliff," a brother and sister befriend a horse in a dystopian future. NPR's Scott Simon explores the issue of authoritarianism with the novelist and playwright.

ARI SHAPIRO, HOST: Some of these moves are already being challenged in court. So how could the actions that are upheld reshape the immigration landscape in the U.S.? NPR's Sergio Martínez ...

Ari Shapiro has been one of the hosts of All Things Considered, NPR's award-winning afternoon newsmagazine, since 2015. During his first two years on the program, listenership to All Things Considered ...

SHAPIRO: NPR's Stephen Fowler there. And of course, yesterday, also marked Martin Luther King Day. NPR's Don Gonyea was at an event in Michigan marking that holiday. Don, tell us what you saw.