Add Yahoo as a preferred source to see more of our stories on Google. Houston Museum of Natural Science's Herzstein Foucault Pendulum has stopped after decades, and museum visitors are wondering why.

HOUSTON — The Houston Museum of Natural Science is most assuredly a gem, but it's far from hidden. Instead, we're talking about a feature hidden in plain sight: Foucault's Pendulum. Dropped right in ...

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, ...