Two columns buckled and floors sagged in the former Pfizer headquarters in Midtown during an apartment conversion.

Engineer Christopher Behan said reinforcing steel was never installed, despite plans that explicitly called for it.

Typically, when you want to build a high rise, you need iron, steel, cement, concrete; materials that are super strong and durable but also come with a high carbon footprint. Now, some builders are ...

The 37-story Manhattan building was under construction when two support columns on the 21st floor buckled. Engineers are developing plans to reinforce the structure.

A Manhattan high-rise that once served as Pfizer's global headquarters was evacuated Tuesday morning after bricks plunged from the 38-story tower.