Ideas that can change the world—and lives—all share the same source: a motivated person who dares to ask, “Why not?" Tonight’s program features individuals who used their platforms to highlight issues as diverse as xenophobia, bigotry, sexism, and other social issues which then allows further discussions on these topics.

Former astronaut Mike Massimino is the veteran of NASA space flights aboard space shuttles Columbia and Atlantis. His final mission was to repair the Hubble Space Telescope in 2009. He tells a compelling story about following a dream and what having the “right stuff” really means—at NASA, in space, and in life. 

Join museum education consultant Sheila Pinsker for a close-up look at the rich and fascinating of Philadelphia as a center of American medicine. Explore the home of pioneering surgeon Philip Syng Physick, the Pennsylvania Hospital, and the Mutter Museum.

Laurie Marker, founder of the Namibia-based Cheetah Conservation Fund and Suzan Murray, the director of the Smithsonian Global Health Program at the Smithsonian Conservation Biology Institute, delve into the complex network of social, economic and environmental problems that must be unraveled if the cheetah, Africa's most endangered big cat, is to have a permanent place on Earth.

At the center of Fox’s wildly popular hip-hop drama, Empire, is the captivating Cookie Lyon. The force behind Cookie is D.C. native Taraji P. Henson, an Academy Award nominee and Golden Globe winner. Henson talks about her new memoir, Around the Way Girl, about making a life and building career—and what really happens behind the scenes on Empire.