Did you know that women make up just 25 percent of STEM professionals? One of these women is Mary Barra, the first female CEO of General Motors. Up next, she explains her road to the top and why more students should pursue an engineering degree.

In this episode of SciTech Now a cathedral is using acoustic engineering to better their sound quality; an investigation of the technology that monitors pipeline leaks; tracking pelicans with solar power; and the CEO of General Motors shares her story.