the moves you have seen recently, whether amazon, google or whatever, have been positive to art's chatterjee long-term aspects. the biggest issue five years ago was convincing people of the cloud and convince large enterprises they can move dearest important information to the cloud. now is expensive because we were only 200 employees telling general electric and walmart and procter & gamble that they should do this. emily: that was all for of box -- four of box's cofounders 10 years after their first major investment. in this edition of "out of this world," president obama is invigorating his call to send u.s. to mars by the 20 30's and return them safely to earth. he wrote that the long-term goal will be to one day remain on the red planet for an extended amount of time. he also calls attention to cooperation between the government and private space companies, without naming elon musk's company by name. he had the 2030 timeline but the initiative attracted little attention. coming up, our conversation with twitter cofounder. why he hopes they stay independent. plus, how he is planning to t