Even an hour of forest bathing can boost mental and physical well-being, and Japan is not alone in recognizing this. South Korea invested more than $14 million in a National Forest Therapy Centre, and New Zealand has long championed a “green prescription” that incorporates getting out into nature to address obesity, type 2 diabetes, high blood pressure and depression. Even in the United States there are no fewer than 150 park-prescription programs, in states from Alaska to Wi