In this show, Lynn Ware Peek and John Wells speak with Michael Harris, author of The End of Absence, who addresses what it'll soon be like to live amongst a generation that has never known life without absence, the loss of lack. . The daydreaming silences in our lives are filled; the burning solitudes are extinguished. There’s no true “free time” when you carry a smartphone. Today’s rarest commodity is the chance to be alone with your own thoughts. Also Bruce Jankosky about the NASA mission to probe the climate history of Mars.