Follow ZDNET: Add us as a preferred source on Google. The way the smartphone fits into our daily lives has changed dramatically over the past decades, from being solely a communication device to now ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Colleen Hagerty Colleen Hagerty is a writer focused on emergency preparedness.

Mascha Davis M.P.H., R.D.N., is a nationally recognized registered dietitian nutritionist, humanitarian and founder of Nomadista Nutrition, a private nutrition practice based in Los Angeles. Her ...