Kat Duff talks about her book, "The Secret Life of Sleep."
Historian Sean Wilentz tells Jim Fleming the birth of Dylan’s music is deeply bound up in the politics of the time.
What is water? When Anne Strainchamps asked Wisconsin's Poet Laureate, Kimberly Blaeser called up the story and myth of the Anishinaabe. Blaeser says growing up on the White Earth Reservation, surrounded by lakes, made her who she is today.
Ziauddin Sardar responds to the question "is there really a clash of civilizations?"
The Oxford English Dictionary was created in 1857, and was expected to be finished within ten years. The first edition was finally completed 71 years later.
Sonu Shamdasani is a historian of psychology at University College, London, and editor of Carl Jung's "Red Book."
Tariq Ramadan is a Swiss-born philosopher who travels throughout the Islamic world trying to build bridges between European Muslim and conservative clerics.
Russell Foster tells Jim Fleming how the body uses light to tell time; why night shift workers have more accidents; and why it can matter when you take your medicine.