The Roman emperors held vast wealth and control in the ancient world. But while many people wanted the title, it wasn't a ...

The bacteria and other microbes that live in your gut are known as your “gut microbiome.” They help you digest food and may support immune, heart, and brain health. However, disruption in your gut ...

Jennifer Krazit (née Guevin) is a freelance writer and editor. Previously, she was a managing editor at CNET, overseeing the How To section, special packages, social media and front-page programming.