This week we lost a great American hero. Dr. Sally Ride was an astronaut, educator, and champion of science education for girls. After retiring from NASA in 1987, she founded Sally Ride Science, an organization devoted to encouraging young people, especially girls, pursue careers in science and math. In the short video below, hear Dr. Ride talk about what it was like to see that thin blue line of the earth’s atmosphere from space for the first time. She ends her message on a note of optimism about what can do to preserve the health of our planet. We salute Dr. Ride for all she accomplished during her lifetime. Her story and legacy will continue to make a difference to us all.