In a desperate bid to attract young viewers, morning news shows upgrade their sets with Internet-themed hangout spaces.
The New York Times's Mark Mazzetti discusses "The Way of the Knife," his book detailing the CIA's expansive secret military campaigns since 9/11.
"Love and Math" author Edward Frenkel makes the case for appreciating the inherent beauty and power of mathematics.
David Letterman announces his retirement from "Late Show," and Stephen marvels at the challenge of filling his shoes.
Lowe's employees repair a veteran's wheelchair, proving that the private sector handles health care better than the government.
Stephen takes Jimmy Carter to task for his liberal ways, and the former president expands on his book "A Call to Action."
Errol Morris shares insights from "The Unknown Known," his documentary about Donald Rumsfeld and his role in the Iraq War.
Renowned scientist Jane Goodall discusses her book "Seeds of Hope" and explains why she shifted her research focus from chimpanzees to plant life.
A Senate report finds that the CIA misled the public about the effectiveness of enhanced interrogation techniques.
Director Robert Rodriguez discusses his Latino-focused cable network El Rey and shares a clip from "From Dusk Till Dawn: The Series."
Cable news coverage of Malaysia's missing Flight 370 veers into bizarre conversations about black holes and "zombie planes."
Mayor Bill de Blasio discusses the challenges of income inequality, the rising cost of living in New York, and his goal of providing a full-day Pre-K program.
Silicon Valley sees a surge in plastic surgery due to the tech industry's preference for younger workers.
Spanish historians claim to have found the cup that Jesus drank from at the last supper.
Filmmaker Ken Burns discusses his documentary "The Address" and expands on the historical significance of Lincoln's Gettysburg Address.
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