Pbs: Nova Science Now: Franklin Chang Diaz: Rocket Scientist

n this video segment adapted from NOVA scienceNOW, meet Franklin Chang-Diaz, an astronaut and scientist. Learn how he has been interested in rockets and space travel since he was a child in Costa Rica, and how he immigrated to the United States to pursue his dream of becoming an astronaut. Hear how he found success in school and eventually was chosen as NASA's first Latin American astronaut. In addition, find out about a new type of rocket that he is developing, which uses a plasma engine, and may help one day facilitate human colonization of the solar system. [4:28]