The world's biggest iceberg, known A23a, is on a collision course with a tiny island in the South Atlantic, which is home to millions of seals and nearly half the world's population of king penguins.
NPR's Steve Inskeep speaks with MSNBC presenter Chris Hayes about his new book, "The Siren's Call: How Attention Became the World's Most Endangered Resource." ...
A 74-year-old Minnesota man aims to become the oldest runner to ever complete the Arrowhead 135, an infamously grueling and chilly race ultramarathon across northern Minnesota.