As a total eclipse approaches on April 8, 2024, solar eclipse enthusiast and former science correspondent for National Public Radio, David Baron, tells about the earliest eclipse chasers in 1878 in his book "American Eclipse: A Nation’s Epic Race to Catch the Shadow of the Moon and Win the Glory of the World." Then, Ann Burg talks about her new young adult biography on the life of Rachel Carson, "Force of Nature: A Novel of Rachel Carson."