Most science experiments take a few months or years, but some take a whole lot longer. Here are six of the longest-running experiments of all time, including one expected to last 500 years. Hosted by: ...

In a quiet corner of a physics building in Australia, a glass funnel filled with a tar-like substance has been dripping so ...

A t the University of Queensland, there is a display containing the longest-running laboratory experiment in the world. It's ...

In the Arizona desert, a vast glass structure sits far from cities and farmland. It was built to test an idea that once seemed urgent and uncertain. C.