With the popularity of CleanTok on social media, we’re constantly being reminded about how dirty everything around us is. But while you might feel you should disinfect every surface in your home or ...

From "good dirt" to nutrition, we talked to parents and experts about the building blocks of a super-powered immune system.

As a child, you may have been told that playing outside in the dirt is good for you because it strengthens your immune system. But is there any evidence to back this claim? In short, yes — several ...

You may have heard that a little dirt is good for kids. It helps them build up their immune systems, and sets them on a path to future health. But what kind of filth does the trick? Producer Kathleen ...