This week, author and journalist Mark Arax chronicles the journey water takes in California, from the mountainous peaks and snow melts of the north, through the nut and fruit farms of the Central Valley, and up and over the mountain to the faucets and swimming pools of Southern California. Environmental attorney Thomas Linzey discusses his work defending the “rights of nature.” Science writer Lucy Jones makes the connection between nature and mental health. At the Santa Monica Farmer’s Market, Dawn Birch reveals unprecedented steps she and her husband are taking to irrigate their property, and Chef Carlos Salgado is in search of peaches.