Explore the Northrop B-2 Spirit, the most expensive plane ever built at $2 billion per aircraft. This video delves into the insane engineering behind the B-2 Bomber, its design that resembles a sci-fi ...

The Biggest Megaprojects of the 20th Century 0:30 — Brasilia 2:45 — Petronas Towers 5:10 — The World Trade Center 9:28 — Kashiwazaki-Kariwa Nuclear Power Plant 12:45 — Hoover Dam 15:36 — Panama Canal ...