UndMatt Biers-Ariel is author of three books on religion and the environment. Spirit in Nature: Teaching Judaism and Ecology on the Trail is an indispensable trail guide used by Jewish summer camps and schools across the country. The Seven Species is filled with short stories and natural histories about the seven sacred plants of Israel mentioned in the Bible. Solomon and the Trees is a children's book about Tu B'shavat, the Jewish arbor day. Matt lives in Davis, California, with his wife and his two children. He teaches English at Winters High School.