What started as a hobby, is now the world's largest model railroad. Bruce Williams Zaccagnino began his miniature world in the basement of his home, slowly adding bridges and track until it grew into the 52,000-square-foot installation it is today. In this documentary, the man behind the model describes how Northlandz came to be.
It's a long, perilous trip to the Red Planet, not to mention trying to survive once you're there — just ask Matt Damon. Elon Musk's SpaceX company wants to take us there. Here's a few ideas that will help make the trip possible.