Blue Ridge Aquaculture raises about two million tilapia at a time — calm fish that like swimming in large schools. (Credit Sandy Hausman)
Like many cities in southside Virginia, Martinsville lost thousands of jobs as tobacco, furniture-making and textiles left for places where labor was cheaper.
But as those industries went away, a new one grew up thanks to one man with an idea.
Sandy Hausman met him and toured what is now the largest indoor fish farm in the world.
Virginia Public Radio 