Whether it's bringing back supersonic passenger travel or living in space, The Limit explores the biggest challenges engineers, scientists, and athletes are racing to overcome. Dan Allen has spent the past year asking the tough questions about why the future we were promised hasn't arrived yet — and what's actually standing in the way. Here are six futuristic things that are almost impossible. 00:00:00 – Intro 00:00:26 – Why a Mile-High Skyscraper Is Almost Impossible 00:30:37 – Why Bringing Back Supersonic Is Almost Impossible 01:04:47 – Why Fully Self-Driving Cars Are Almost Impossible 01:44:33 – Why Deadlifting 505 Kilograms Is Almost Impossible 02:16:32 – Why Drilling to the Earth's Mantle Is Almost Impossible 02:47:47 – Why Living in Space Is Almost Impossible 03:37:52 – Credits ------------------------------------------------------ #engineering #science #supersonic #selfdriving #spacetravel #skyscraper #geothermal #strongman #TheLimit WATCH MORE: 21 Fascinating Jobs Around ...