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Following up its Emmy Award-winning documentary, "Why the Towers Fell," NOVA probes the conclusions of the government's engineering investigation into the World Trade Center's collapse on 9/11, with updated analysis of the devastating attack and how subsequent knowledge gained will shape skyscrapers of the future. Yet is it practical or even possible to construct invincible buildings? "" features candid interviews with leading construction and safety experts, investigators, architects, and engineers—including Leslie Robertson, lead structural engineer of the original World Trade Center and Shanghai's new World Financial Center, and Jake Pauls, occupants advocate and evacuation specialist. From the hallways of the newly erected World Trade Center 7 in New York, to China, where the world's tallest building is midway to completion, NOVA explores the complex challenges of building tall buildings in the wake of 9/11.

How to Watch Building on Ground Zero Legally and Safely

If you want to stream Building on Ground Zero through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Building on Ground Zero films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.