Roosevelt called them “the lungs of the Earth,” Robert Frost and millions of poets were inspired by them, and Sting is fighting to save them. We’re talking about forests. And celebrities aren’t the only ones who feel a strong connection with them. We all do. Just a simple walk in the woods can calm and invigorate our senses. In fact, the forests are so crucial to the future of our planet that the UN declared March 21 to be the International Day of Forests.