Sept. 15 -- Astronaut Scott Kelly is officially halfway through his one-year mission aboard the International Space Station. It's a record-setting project that will help NASA understand the effects of long-term space travel on the mind and body -- key information for the organization's eventual plans to send humans to Mars in the 2030s. Dr. Julie Robinson, NASA's chief scientist for the International Space Station, gives an update on the mission. She speaks with Bloomberg's Emily Chang on "Bloomberg West."
