Arturo the polar bear, living in a cramped and hot zoo enclosure in Argentina, is the subject of an online campaign that includes former House Speaker Newt Gingrich.
International correspondent Ari Shapiro talks with NPR's Scott Simon from Jerusalem about about the second day of the Israeli military's ground operation of the Gaza Strip.
Sunday is the 45th anniversary of the Apollo 11 moon landing. NPR's Scott Simon talks with Buzz Aldrin about his new YouTube channel, where anyone can share memories from the historic day.
Saturday is the second day of protests by those opposed housing migrant children in their towns. Murrieta, Calif., is among those cities, but many say the protesters don't represent their city.