Greenbelt Pioneer: Bob Cahalan

Bailey Henneberg caught up with Bob Cahalan at NASA Goddard to talk about his high impact work to explore the power of the sun and how much of its energy our planet is taking in and bouncing back. It's a delicate dance that has serious implications on weather, global warming, our food supply and ultimately our survival. Bob Cahalan and NASA's top brain brawn are at the center of boldly discovering depths of energy that no human has known before.