This guy makes some excellent points and does so with a lot of passion. It would be the greatest discovery in the history of mankind if we discovered life on Mars. His point about Columbus was spot on. In 500 years from now no one is going to care about the Syrian Civil War and who had the upper hand this week. Our actions regarding Mars, on the other hand, will most likely have the greatest impact on future generations to come. Especially if we terraform that planet and make it habitable and suitable for human civilization. We would become a true interplanetary species.