The Why Files on MSN

The Philadelphia Experiment – The Day a U.S. Warship Vanished

In October 1943, witnesses saw a green fog engulf the USS Eldridge—and then the ship was simply gone. This is the story of the Navy’s top-secret experiment that still fuels rumors of invisibility, ...
Today I Found Out on MSN

The Truth Behind the U.S. Navy’s Most Bizarre Experiment

In 1943, during World War II, the U.S. Navy allegedly conducted a secret experiment in Philadelphia Harbor. The goal: to make a warship invisible to radar — and possibly to the naked eye. Witnesses ...