The world’s tallest building took five years to reach its 828-meter, 2,716-foot height, but a Chinese company wants to leave...
Space elevators have been our shared dream for years, but like other promising technologies of the future, they’re just concepts...
The tallest building on Earth--by a long shot
Designers of the freedom tower, soon to rise at ground zero, say cutting-edge engineering will make occupants safer. Will they...