This week on “The Learning Curve," Gerard and Cara talk with Dr. Farouk El-Baz, retired research professor and director of the Center for Remote Sensing at Boston University. They discuss his remarkable, varied, and pioneering career in the sciences, surveying both the heavens and the Earth, and key teachers and scientists who have influenced him. Dr. El-Baz shares what it was like serving as supervisor of Lunar Science Planning for NASA's Apollo program, and working on the world-changing project of putting a human on the Moon.