Houston Museum of Natural Science's Herzstein Foucault Pendulum has stopped after decades, and museum visitors are wondering why. The pendulum at the museum is attached to a 61-foot-long cable. It ...

“The only skyscraping girls’ school in the world” is small (600 students) Mundelein College, which is lodged near Lake Michigan in a 15-story building on Chicago’s North Side. A popular teacher of ...

At the Houston Museum of Natural Science they recently made a disturbing discovery: their Foucault pendulum had stopped swinging for the first time since its installation in the 1970s. (Video, ...