Amazon founder Jeff Bezos and three crewmates soared high above the Texas desert aboard his company Blue Origin's New Shepard rocket on Tuesday and returned to Earth. Bezos traveled to space around nine days after his rival Richard Branson reached the edge of space aboard a Virgin Galactic rocket plane from New Mexico. Is there much of a difference between the experiences of two business tycoons? What is the commercial prospect of space travel? Is it appropriate at a time when climate change is having a devastating impact around the world? John Zarrella explains.