Four plants that are scientifically proven to be therapeutic; Plants can offer a lot of help with everything from pain relief to heart disease.

If you're reading this, you're probably stressed. Never fear: We've dug through the evidence to reveal what science really says about finding zen—and holding onto it through tough times. Want to try meditation? Take better baths? Stop anxiety in its tracks? Welcome to Calm Month. Before we could grow cultures in petri dishes and mix compounds in test tubes, Mother Nature was the world's pharmacy...