Can SpaceX Put a Million People on Mars? | with Dr. Scott Solomon

Dr. Scott Solomon returns to Event Horizon to discuss whether SpaceX’s Mars ambitions are realistic, what a permanent human settlement on Mars would actually require, and why human reproduction in space may be the biggest ethical and biological challenge of all. https://www.houstonchronicle.com/opinion/outlook/article/spacex-mars-colony-musk-ipo-22301881.php Drawing from his new book Becoming Martian, Dr. Solomon examines how spaceflight may permanently change our biology, and what that means