Pioneering astronaut Kathryn Sullivan—now the Administrator of the National Oceanic and Atmospheric Administration (NOAA)—made history in October 1984, when she became the first American woman to walk in space. Thirty years later, Dr. Sullivan sat down at The Pew Charitable Trusts with Lynn Sherr—author of the recent New York Times best-seller Sally Ride: America's First Woman in Space—to reflect on her time in space, "environmental intelligence," and our ever-changing planet. #PewBluePlanet