Subway Facts

Scientists found that 15% of matter in the air at subway stations is human skin, from areas such as heels, belly buttons, armpits, and rear ends.

Passengers on the Beijing subway can pay with plastic bottles.

In major cities like Brooklyn and London, there are fake townhouses that hide subterranean chimney vents, emergency subway exits, and more. Camouflaged in plain sight, they normally go unnoticed within their architectural surroundings.

NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.