The unmanned aircraft, described by the FBI as black and no more than three feet wide with four propellers, came within 200 feet of the Boeing jetliner.

CNN: Drone came within 200 feet of airliner over New York

Crews dug a trench three feet wide down to bedrock.

FORBES: The Bathtub. Lower Manhattan's Wall Against Water.

Imagine an iPhone for a giant: Jeff Han, a research scientist, has built an amazing interactive touch-screen wall, eight feet wide and three feet high.

FORBES: Radical Ideas

In Manhattan, there are only three homes under 12 feet wide, with the slimmest at nine-and-a-half-feet on Bedford Street in Greenwich Village, according to city tax records.

WSJ: Side by Side Homes on Upper East Side Go on Market Together for $11.95 Million