Engineers led by sci-fi writer Neal Stephenson have unveiled plans for the tallest building in the world. Tall Tower would be 24 times the height of Dubai’s Burj Khalifa, considered the tallest building in the world, and would double the maximum heights for commercial airspace, as the designers believe the tower could also be used to launch rockets into space. A building this high poses many structural issues, and we don’t know if it will ever be built.
