Wearing outdoor shoes inside could bring deadly bacteria and cancer-causing chemicals into your home, an expert has warned. Toxic E. coli, which can trigger life-threatening kidney disease ...

Outside, your shoes can pick up microplastics and toxic street runoff. Tracey Woodruff's research convinced her to stop wearing shoes inside the home.

Microplastics from car tires and garbage, as well as street runoff, can be tracked indoors on shoes. The researcher thinks her kids' Japanese heritage helped them adopt the habit. This as-told-to ...