USA TODAYPrivate space travel became a reality this month. and  made history by rocketing to the edge of space just outside of Earth. While the billionaires' successful space flights open the door to potential space tourism, they also come with environmental concerns."Jeff Bezos, the wealthiest man on earth who loves to preach to the rest of us about the need to lower our personal carbon footprint, just created a carbon footprint equal to the yearly output of small African nations on a vanity trip to space," reads a . A  adds the business magnate's rocket,...…USA TODAYPrivate space travel became a reality this month. and  made history by rocketing to the edge of space just outside of Earth. While the billionaires' successful space flights open the door to potential space tourism, they also come with environmental concerns."Jeff Bezos, the wealthiest man on earth who loves to preach to the rest of us about the need to lower our personal carbon footprint, just created a carbon footprint equal to the yearly output of small African nations on a vanity trip to space," reads a . A  adds the business magnate's rocket,...WW…