5 Facts which have nothing to do with why Pittsburgh is going toe to toe with Silicon Valley.

It all started in 2006 when Google opened an office at Carnegie Mellon University. That opened the door to other tech giants, such as Apple Inc., Amazon.com Inc. and Facebook to set up shop in the area.

Today, Pittsburgh is one of the fastest-growing cities for startups, with companies like CleanRobotics calling it home.