What Happens to You at Every Height of the Sky

That glass of water is boiling. And it isn't hot. At nineteen kilometers, so is the water in your mouth. We go straight up, one height at a time, from the tip of the tallest building on Earth to the space station 400 kilometers up. At every stop: what the sky does to your body, and who went up there anyway. Why altitude sickness starts at ski resort height. Why Everest climbers sleep in gasps. The death zone, where every hour costs you. A vulture that hit a jet at 11,300 m. What happens if the plane window goes. The Armstrong limit, where water boils at body temperature. Joe Kittinger's secret at 31 km. A skydiver faster than sound. The line where space starts. And why astronauts are not floating at all. So: one hour in the death zone without oxygen, or one minute at 19 km without a suit? Tell us which, and why. Chapters 0:00 That glass of water is boiling 0:39 828 m: The Tip 1:02 2,500 m: Thin Air 1:44 5,364 m: Base Camp 2:20 8,000 m: The Death Zone 3:04 8,849 m: The Top 3:34 10,700 m: Cruising 4:24 11,300 m: The Vulture 4:55 19 km: The Armstrong Limit 5:53 31 km: The Highest Step 6:31 39 km: Faster Than Sound 7:11 100 km: Space 7:42 400 km: Orbit 8:37 So how high can you go? 9:21 Now try the other direction Wondervark: true things, told strange. #space #everest #science